Transcript
PC2 Series Service Manual
©2004 All rights reserved. Kurzweil is a product line of Young Chang Co.; Kurzweil is a trademark of Young Chang Co. All other products and brand names are trademarks or registered trademarks of their respective companies. Product features and specifications are subject to change without notice.
Part Number: 910395 Rev. A
The lightning flash with the arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
IMPORTANT SAFETY & INSTALLATION INSTRUCTIONS INSTRUCTIONS PERTAINING TO THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS WARNING: When using electric products, basic precautions should always be followed, including the following: 1.
Read all of the Safety and Installation Instructions and Explanation of Graphic Symbols before using the product.
2.
Do not use this product near water—for example, near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming pool, or the like.
3.
This product should be used only with a stand or cart that is recommended by the manufacturer.
4.
This product, either alone or in combination with an amplifier and speakers or headphones, may be capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist.
5.
The product should be located so that its location or position does not interfere with its proper ventilation.
6.
The product should be located away from heat sources such as radiators, heat registers, or other products that produce heat.
7.
The product should be connected to a power supply only of the type described in the operating instructions or as marked on the product.
8.
This product may be equipped with a polarized line plug (one blade wider than the other). This is a safety feature. If you are unable to insert the plug into the outlet, contact an electrician to replace your obsolete outlet. Do not defeat the safety purpose of the plug.
9.
The power supply cord of the product should be unplugged from the outlet when left unused for a long period of time. When unplugging the power supply cord, do not pull on the cord, but grasp it by the plug.
10. Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. 11. The product should be serviced by qualified service personnel when: A.
The power supply cord or the plug has been damaged;
B.
Objects have fallen onto, or liquid has been spilled into the product;
C.
The product has been exposed to rain;
D.
The product does not appear to be operating normally or exhibits a marked change in performance;
E.
The product has been dropped, or the enclosure damaged.
12. Do not attempt to service the product beyond that described in the user maintenance instructions. All other servicing should be referred to qualified service personnel. 13. WARNING: Do not place objects on the product’s power supply cord, or place the product in a position where anyone could trip over, walk on, or roll anything over cords of any type. Do not allow the product to rest on or be installed over cords of any type. Improper installations of this type create the possibility of a fire hazard and/or personal injury.
RADIO AND TELEVISION INTERFERENCE WARNING: Changes or modifications to this instrument not expressly approved by Young Chang could void your authority to operate the instrument. IMPORTANT: When connecting this product to accessories and/or other equipment use only high quality shielded cables. NOTE: This instrument has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the instrument is used in a commercial environment. This instrument generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this instrument in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his or her own expense. Changes and modifications not expressly approved by the manufacturer
or registrant of this instrument can void the user’s authority to operate this instrument under Federal Communications Commission rules. In order to maintain compliance with FCC regulations, shielded cables must be used with this instrument. Operation with unapproved equipment or unshielded cables is likely to result in harmful interference to radio and television reception. NOTICE This apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. AVIS Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la class A prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada.
SAVE THESE INSTRUCTIONS ii
Young Chang Distributors Contact the nearest Young Chang office listed below to locate your local Young Chang/Kurzweil representative. A N D Music Corp. P.O. Box 99995 Lakewood, WA 98499-0995 Tel: (253) 589-3200 Fax: (253) 984-0245 Young Chang Akki Co., Ltd. 178-55 Gajwa-Dong Seo-Ku, Inchon Korea 404-250 Tel: 011-82-32-570-1380 Fax: 011-82-32-570-1218 Young Chang America, Inc. (Canadian Division) P.O. Box 61515 9350 Yonge Street Richmond Hill, Ontario Canada L4C 3N0 Tel: (905) 508-0531 Fax: (905) 508 1308
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Contents Young Chang Distributors ............................................................................................................................................... iii
Chapter 1
Introduction
Models ....................................................................................................................................................................... 1-1 Notes, Cautions, Warnings ..................................................................................................................................... 1-1 PC2/PC2X ........................................................................................................................................................................ 1-2 PC2/PC2X Rear Panel ............................................................................................................................................. 1-2 Rear Panel Features.................................................................................................................................................. 1-2 PC2/PC2X Front Panel............................................................................................................................................ 1-3 Front Panel Features ................................................................................................................................................ 1-3 PC2R.................................................................................................................................................................................. 1-6 PC2R Rear Panel....................................................................................................................................................... 1-6 Rear Panel Features.................................................................................................................................................. 1-6 PC2R Front Panel ..................................................................................................................................................... 1-6 Front Panel Features ................................................................................................................................................ 1-7
Chapter 2
Diagnostics
Diagnostic Tests ............................................................................................................................................................... 2-1 Entering Diagnostics....................................................................................................................................................... 2-2 Diagnostic Test Modes.................................................................................................................................................... 2-2 Run One Test............................................................................................................................................................. 2-2 Run Burn-in............................................................................................................................................................... 2-3 Test Results....................................................................................................................................................................... 2-3 Description of Tests......................................................................................................................................................... 2-4 ROM ........................................................................................................................................................................... 2-4 Read-write................................................................................................................................................................. 2-4 RAM ........................................................................................................................................................................... 2-4 MABEL ...................................................................................................................................................................... 2-4 LISA ........................................................................................................................................................................... 2-4 Sound ROM .............................................................................................................................................................. 2-4 ZRAM ........................................................................................................................................................................ 2-5 MIDI ........................................................................................................................................................................... 2-5 LED............................................................................................................................................................................. 2-5 PCX-1 ROM............................................................................................................................................................... 2-5 PCX-1 RW.................................................................................................................................................................. 2-5 PCX-1 RAM............................................................................................................................................................... 2-5 PCX-1 MABEL .......................................................................................................................................................... 2-6 PCX-1 SROM............................................................................................................................................................. 2-6
Chapter 3
PC2R Disassembly/Assembly
Introduction ..................................................................................................................................................................... 3-1 Cables, Connectors................................................................................................................................................... 3-1 Flat Ribbon Cables ............................................................................................................................................ 3-1 Cable Routing.................................................................................................................................................... 3-1 Required Tools and Materials................................................................................................................................. 3-1 Opening the PC2R........................................................................................................................................................... 3-2
Kurzweil PC2 Series Service Manual Contents
Removing the Top Cover ........................................................................................................................................ 3-2 Replacing the Top Cover......................................................................................................................................... 3-2 Removing the Connector Board............................................................................................................................. 3-3 Replacing the Connector Board ............................................................................................................................. 3-4 Removing the Polyphony Expansion Board (PCX-1) ......................................................................................... 3-5 Replacing the Polyphony Expansion Board (PCX-1).......................................................................................... 3-5 Removing the Engine Board................................................................................................................................... 3-6 Replacing the Engine Board ................................................................................................................................... 3-6 Front Panel Assembly ..................................................................................................................................................... 3-8 Removing the Front Panel Assembly .................................................................................................................... 3-8 Replacing the Front Panel Assembly..................................................................................................................... 3-8 Removing the Front Panel Faceplate..................................................................................................................... 3-9 Replacing the Front Panel Faceplate ..................................................................................................................... 3-9 Front Panel Boards................................................................................................................................................... 3-9 Removing the Right Front Panel Board .............................................................................................................. 3-10 Replacing the Right Front Panel Board................................................................................................................3-11 Removing the LCD Board......................................................................................................................................3-11 Replacing the LCD Board ..................................................................................................................................... 3-12 Removing the Left Front Panel Board................................................................................................................. 3-12 Replacing the Left Front Panel Board ................................................................................................................. 3-13 Removing the Headphone/Volume/Power Switch Board ............................................................................. 3-14 Replacing the Headphone/Volume/Power Switch Board .............................................................................. 3-14
Chapter 4
PC2/PC2X Disassembly/Assembly
Introduction ..................................................................................................................................................................... 4-1 Notes, Cautions, Warnings ..................................................................................................................................... 4-1 Cables, Connectors................................................................................................................................................... 4-1 Flat Ribbon Cables ............................................................................................................................................ 4-1 Cable Routing.................................................................................................................................................... 4-1 Required Tools and Materials................................................................................................................................. 4-1 Opening the PC2/PC2X ................................................................................................................................................. 4-2 PC2 Bottom ............................................................................................................................................................... 4-2 PC2X Bottom............................................................................................................................................................. 4-3 Removing the Top Enclosure.................................................................................................................................. 4-4 Replacing the Top Enclosure .................................................................................................................................. 4-6 Closing the PC2/PC2X............................................................................................................................................ 4-6 Top Enclosure................................................................................................................................................................... 4-7 Removing the Enclosure Support Walls ............................................................................................................... 4-8 Left Enclosure Support Wall............................................................................................................................ 4-8 Right Enclosure Support Wall......................................................................................................................... 4-8 Replacing the Enclosure Support Walls................................................................................................................ 4-8 Left Enclosure Support Wall............................................................................................................................ 4-8 Right Enclosure Support Wall......................................................................................................................... 4-8 Removing the Connector Board............................................................................................................................. 4-8 Replacing the Connector Board ........................................................................................................................... 4-10 Removing the Front Panel Board......................................................................................................................... 4-10 Replacing the Front Panel Board ......................................................................................................................... 4-12 Removing the LCD Board..................................................................................................................................... 4-13 Replacing the LCD Board ..................................................................................................................................... 4-13 Removing the Polyphony Expansion Board (PCX-1) ....................................................................................... 4-13 Replacing the Polyphony Expansion Board (PCX-1)........................................................................................ 4-14
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Kurzweil PC2 Series Service Manual Contents
Removing the Slider Board................................................................................................................................... 4-14 Replacing the Slider Board ................................................................................................................................... 4-15 Removing the Engine Board................................................................................................................................. 4-15 Replacing the Engine Board ................................................................................................................................. 4-17 Removing the Mod Wheel Assembly.................................................................................................................. 4-17 Replacing the Mod Wheel Assembly .................................................................................................................. 4-18 PC2 Keyboard Assembly.............................................................................................................................................. 4-19 Removing the PC2 Keyboard Assembly............................................................................................................. 4-19 Replacing the PC2 Keyboard Assembly ............................................................................................................. 4-20 Disconnecting the PC2 Keyboard ........................................................................................................................ 4-21 Connecting the Keyboard ..................................................................................................................................... 4-21 Removing Keys ...................................................................................................................................................... 4-22 Natural/White Key ........................................................................................................................................ 4-22 Natural/White Keys.............................................................................................................................................. 4-23 Sharp/Black Keys .................................................................................................................................................. 4-23 Replacing a Key...................................................................................................................................................... 4-24 Servicing the Keyboard Contact Boards ............................................................................................................. 4-24 Removing the Treble Contact Board ............................................................................................................ 4-24 Replacing the Treble Contact Board ............................................................................................................. 4-24 Removing the Bass Contact Board ............................................................................................................... 4-24 Replacing the Bass Contact Board ................................................................................................................ 4-24 Removing the Keyboard Contact Strips ............................................................................................................. 4-25 Replacing the Keyboard Contact Strips .............................................................................................................. 4-25 PC2X Keyboard Assembly ........................................................................................................................................... 4-26 Removing the PC2X Keyboard Assembly .......................................................................................................... 4-26 Replacing the PC2X Keyboard Assembly........................................................................................................... 4-27 Removing Keys ...................................................................................................................................................... 4-27 Natural/White Key ........................................................................................................................................ 4-28 Natural/White Keys.............................................................................................................................................. 4-28 Sharp/Black Keys .................................................................................................................................................. 4-29 Replacing a Key...................................................................................................................................................... 4-30 Servicing the Keyboard Contact Boards ............................................................................................................. 4-30 Removing the Treble Contact Board ............................................................................................................ 4-30 Replacing the Treble Contact Board ............................................................................................................. 4-30 Removing the Bass Contact Board ............................................................................................................... 4-30 Replacing the Bass Contact Board ................................................................................................................ 4-31 Removing the Keyboard Contact Strips ............................................................................................................. 4-31 Replacing the Keyboard Contact Strips .............................................................................................................. 4-32 Removing a Key Weight........................................................................................................................................ 4-32 Replacing a Key Weight ........................................................................................................................................ 4-33
Chapter 5
Troubleshooting
Introduction ..................................................................................................................................................................... 5-1 Cables, Connectors................................................................................................................................................... 5-1 Flat Ribbon Cables ............................................................................................................................................ 5-1 Cable Routing.................................................................................................................................................... 5-1 Surface-Mount Devices ........................................................................................................................................... 5-1 Saving User Data...................................................................................................................................................... 5-1 Boot Block......................................................................................................................................................................... 5-2 Entering the Boot Block........................................................................................................................................... 5-2 Resets................................................................................................................................................................................. 5-2
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Kurzweil PC2 Series Service Manual Contents
Hard Reset................................................................................................................................................................. 5-2 Soft Reset ................................................................................................................................................................... 5-2 Software Updates ............................................................................................................................................................ 5-3 File Formats............................................................................................................................................................... 5-3 Installing the Operating System or Setups........................................................................................................... 5-3 Installing a New Boot Block ................................................................................................................................... 5-4 Installing Sound ROM Options.............................................................................................................................. 5-4 Replacing the Battery...................................................................................................................................................... 5-5 PC2 Keyboard Models............................................................................................................................................. 5-5 Accessing the Battery ....................................................................................................................................... 5-5 Removing the Battery....................................................................................................................................... 5-5 Installing the Battery ........................................................................................................................................ 5-5 PC2R Rack Models................................................................................................................................................... 5-6 Accessing the Battery ....................................................................................................................................... 5-6 Removing the Battery....................................................................................................................................... 5-6 Installing the Battery ........................................................................................................................................ 5-6 Scanner Tests .................................................................................................................................................................... 5-7 PC2R Rack Models................................................................................................................................................... 5-7 Front Panel Buttons .......................................................................................................................................... 5-7 Alpha Wheel ...................................................................................................................................................... 5-7 Front Panel Knobs............................................................................................................................................. 5-7 PC2 Keyboard Models............................................................................................................................................. 5-8 Front Panel Buttons .......................................................................................................................................... 5-8 Alpha Wheel ...................................................................................................................................................... 5-8 Front Panel Sliders............................................................................................................................................ 5-8 Wheels ................................................................................................................................................................ 5-9 Keyboard ............................................................................................................................................................ 5-9 Switch Pedals 1, 2, and 3.................................................................................................................................. 5-9 Continuous Pedals 1 and 2 .............................................................................................................................. 5-9 Power Problems............................................................................................................................................................. 5-10 Dead ......................................................................................................................................................................... 5-10 Audio Problems............................................................................................................................................................. 5-10 No Audio................................................................................................................................................................. 5-10 Front Panel Problems.....................................................................................................................................................5-11 LCD not lit................................................................................................................................................................5-11 Buttons, Sliders or Controllers not working .......................................................................................................5-11 Keyboard Problems....................................................................................................................................................... 5-12 Dead Keyboard....................................................................................................................................................... 5-12 Dead Note(s) ........................................................................................................................................................... 5-12 One or More in a Section................................................................................................................................ 5-12 Mechanical Noise............................................................................................................................................ 5-12 PC2R Interconnect Diagram ........................................................................................................................................ 5-13 PC2 Interconnect Diagram........................................................................................................................................... 5-14
Chapter 6
Parts Lists
Introduction ..................................................................................................................................................................... 6-1 PC2/PC2X Printed Circuit Boards and Assemblies............................................................................................ 6-1 PC2R Printed Circuit Boards and Assemblies ..................................................................................................... 6-2 PC2R/PC2/PC2X............................................................................................................................................................ 6-3 Engine Board, N012300051 ..................................................................................................................................... 6-3 PC2/PC2X ........................................................................................................................................................................ 6-5
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Kurzweil PC2 Series Service Manual Contents
Front Panel Board, N012400052 ............................................................................................................................. 6-5 Connector Board, N012300061 ............................................................................................................................... 6-6 LCD Board, N012103800 ......................................................................................................................................... 6-8 Pitch & Mod Wheel Assembly, N012300053 ........................................................................................................ 6-8 Slider Board, N012400051 ....................................................................................................................................... 6-9 PC2 .................................................................................................................................................................................... 6-9 Final Assembly, N012000150 .................................................................................................................................. 6-9 Keyboard Assembly, N215040311 ........................................................................................................................ 6-10 PC2X.................................................................................................................................................................................6-11 Final Assembly N012000151 ..................................................................................................................................6-11 Keyboard Assembly, N215040413........................................................................................................................ 6-12 PC2R................................................................................................................................................................................ 6-13 Connector Board, N01230004 ............................................................................................................................... 6-13 Front Panel Assembly, N012300070..................................................................................................................... 6-14 Left Front Panel Board, N012300080 ................................................................................................................... 6-14 Right Front Panel Board, N012300090................................................................................................................. 6-15 Headphone/Volume/Power Switch Board, N012700019................................................................................ 6-15 LCD Board, N012103802 ....................................................................................................................................... 6-15 Final Assembly, N012000153 ................................................................................................................................ 6-16
Chapter 7
Schematics
Engine Board–Microprocessor (page 1 of 5)................................................................................................................ 7-3 Engine Board–Master/Slave Mabels (page 2 of 5) ..................................................................................................... 7-4 Engine Board–Lisa F/X 128Ch Option, Clocks (page 3 of 5).................................................................................... 7-5 Engine Board–Sound ROM, Uart, Glue, Decoupling (page 4 of 5).......................................................................... 7-6 Engine Board–Audio Channel, Muting Control (page 5 of 5) .................................................................................. 7-7 Front Panel and IBBB Board (keyboard models)–FP Buttons and LEDs (page 1 of 2).......................................... 7-8 Front Panel and IBBB Board (keyboard models)–IBBB Buttons and LEDs (page 2 of 2) ..................................... 7-9 Connector Board (keyboard models)–Scanner (page 1 of 3)................................................................................... 7-10 Connector Board (keyboard models)–Digital Interface (page 2 of 3) .....................................................................7-11 Connector Board (keyboard models)–Power Supply/Audio (page 3 of 3).......................................................... 7-12 Slider Board (keyboard models)–Sliders ................................................................................................................... 7-13 Right Front Panel Board (rack models)–FP Buttons and LEDs (page 1 of 2) ....................................................... 7-14 Left Front Panel Board (rack models)–Controllers, FP Buttons and LEDs (page 2 of 2) .................................... 7-15 Connector Board (rack models)–Scanner (page 1 of 3)............................................................................................ 7-16 Connector Board (rack models)–Digital Interface (page 2 of 3) ............................................................................. 7-17 Connector Board (rack models)–Power Supply/Audio (page 3 of 3) ................................................................... 7-18 Power/Volume/Headphone Board (rack models) .................................................................................................. 7-19
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Kurzweil PC2 Series Service Manual Contents
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Chapter 1 Introduction This chapter provides the service technician with a layout of the front and rear panel features, as well as a brief explanation of thier functions. For in-depth descriptions of the many features the PC2 Series instruments include, consult the Musician’s Guide. This chapter also includes a description of the models available in the PC2 Series and a description of the symbols used throughout this manual. Note: If possible, all user programs and setups should be saved prior to opening the unit, entering the Boot Block to run diagnostics or to perform a hard reset. For instructions to save all user programs and setups, see Saving User Data in Chapter 5, page 5-1.
Models There are three models in the PC2 series. The available models are listed below. • • •
PC2, 76-note keyboard PC2X, 88-note keyboard PC2R, rack-mount
Notes, Cautions, Warnings Please pay special attention to all Notes, Cautions, and Warnings used throughout this manual as they not only point out specific instructions, but also alert you to differences between the PC2R rack units, the 76-note PC2 keyboard, and the 88-note PC2X keyboard. Certain chapters and sections are solely for the rack or keyboard units. Other chapters combine both the rack and keyboard units. A brief description of these symbols follows: Note: Provides additional information, indicates differences between models, and emphasizes specific instructions. Caution: Instructs you to proceed cautiously so that damage does not occur to the unit or individual components. Warning: Alerts you so that damage does not occur to yourself, others, or external devices.
1-1
Introduction PC2/PC2X
PC2/PC2X PC2/PC2X Rear Panel Power Connector
Power I / 0
Digital Out
MIDI Adapter In
Thru / Out
Breath Input
Ribbon Input
Pedals In
Thru / Out
Out
LCD Contrast
Digital Out
Switch 1
Inputs 2
3
Continuous 1
Breath
Audio Outs Ribbon
2
Left
Right
Headphones
9.0V 2.0A 14.0V~0.25A
MIDI Ports
Power Switch MIDI Select Switch
Figure 1-1
Switch Pedals LCD Contrast
Audio Outs Continuous Control Pedals
Headphones
PC2 rear panel features
Rear Panel Features Power Switch—Rocker switch to turn the power on and off. Power Connector—Keyed four-pin connector to attach the Kurzweil 9VDC power adapter. MIDI Select Switch—Slide switch to select the operation of the MIDI Thru/Out port. This switch is recessed into the rear panel so that it cannot be accidentally changed. MIDI Ports—In, Thru/Out, and Out ports to connect the PC2 to other MIDI devices to receive, pass, and send MIDI data. LCD Contrast—Rotary potentiometer to adjust the LCD for the best visibility. Digital Out—RCA jack to connect to digital recorders and mixers. Switch Pedals—Three 1/4” jacks to connect switch pedals that can be assigned to control operations such as sustain, sostenuto, etc. (use 1/4” tip/sleeve). Continuous Control Pedals—Two 1/4” jacks to connect pedals that can be assigned to control operations such as volume, expression, etc. (use 10KΩ linear taper potentiometer, 1/4” tip/ring/sleeve). Breath Input—A 3.5mm jack to connect a standard breath controller. Ribbon Input—Modular jack to connect the Kurzweil Ribbon Controller option. Audio Outs—Balanced 1/4” left and right audio output jacks to connect to an amplifier, mixer or sound system. Headphones—Standard 1/4” jack to connect headphones.
1-2
Introduction PC2/PC2X
PC2/PC2X Front Panel Figure 1-2 is an illustration of the front panel for the PC2 and the PC2X. Enlargements of sections of this illustration follow, as well as a brief description of the front panel features.
Zone Parameters
LCD and cursor buttons
Zone Parameters
Zone Select and Assignable Controllers
MIDI Xmit
Main
Layer
Zone 1
Split
Zone 2
Perc On / Off
Zone 3
Volume
A
Zone 4
Decay
B
C
System
Sound Parameters
Program Key Range Transpose
Timbre
Envelope
System LFO
Alpha Wheel, Minus (-) and Plus (+) buttons, Alphanumeric keypad Data Entry
Global
MIDI Recv
Panic
Split Layer
Pitch Split Point
Master Volume
Sound Parameters
Solo
Functions
Drawbar Toggle
Velocity
Controllers Arpeggiator
Compare
Copy
Store
D
1
2
3
ABC
DEF
GHI
4
5
6
JKL
MNO
PQR
7
8
9
STU
VWX
+/-
0
EQ
Sound Source Internal
User
Exp 1
Exp 2
Octave Shift SW1
Sound / Setup Select Internal Voices
Rotary Fast / Slow
MIDI Setups
Effects and Reverb KB3 Mode
Piano 1
SW2
L o w
H i g h
M i d 16' 2 2/3'
5 1/3' 2'
Chorus / Vib On / Off
Previous Group
Next Group
4' 1 1/3'
E Piano 1 E Piano 2 Pop Keys
Clavier
Organ
Brass
2
3
4
5
6
7
8
Voices
Synths
Pads
Guitar
Bass
Drums
Percussion
9
10
11
12
13
14
15
16
Chorus / Vib Depth
Select
FX-B
Select
Wet / Dry
FX Mode
YZ Clear
Space
Cancel
Enter
No
Yes
Mute B
Demo
Effects and Reverb
Sound/Setup Select
Master Volume
Figure 1-2
FX-A
Mute A
SW3 8' 1 3/5'
Piano 2
1
Strings
UPPER / lower 0 - 9
Sound Source
Sound/Setup Select
PC2/PC2X Front Panel layout
Front Panel Features Zone Select and Assignable Controllers Main
Layer
Zone 1
Split
Zone 2
Perc On / Off
Zone 3
Volume
Split Layer Zone 4
Decay
Pitch Split Point
Master Volume
A
B
C
Solo Drawbar Toggle
D EQ
Octave Shift SW1 Rotary Fast / Slow
SW2
L o w
M i d 16' 2 2/3'
Figure 1-3
H i g h 5 1/3' 2'
Chorus / Vib On / Off
SW3 8' 1 3/5'
4' 1 1/3'
Chorus / Vib Depth
Master Volume, Zone Select and Assignable Controllers section
1-3
Introduction PC2/PC2X
Master Volume—Slidepot to adjust the overall volume. Zone Select and Assignable Controllers—The operation of the buttons and sliders in this section depends on which of the three performance modes is active. Their labelling is colorcoded to identify their function in each of the performance modes. They are labelled as follows: white–Internal Voices mode, blue–MIDI Setups mode, and orange–KB3 mode.
Zone Parameters MIDI Xmit
Sound Parameters
Program Key Range Transpose
Timbre
Envelope
System LFO
Global
MIDI Recv
Panic
Functions Velocity
Controllers Arpeggiator
Compare
Copy
Store
Sound Source Internal
Figure 1-4
User
Exp 1
Exp 2
PC2 Front Panel, center section
LCD—Forty-character, two-line liquid crystal display. Cursor buttons—These buttons move the cursor bar in the LCD. Generally, they select bank and program ID parameters and some KB3 settings. Zone Parameters—Each button in this section represents a menu of available parameters for use while editing setups. Sound Source—Each button in this section selects a bank of programs or setups for each of the performance modes. Sound Parameters—Each button in this section represents a menu of available parameters for use while editing programs in the Internal Voices and KB3 modes. Functions—Use the buttons in this section while editing programs or settings to compare between an original and a modified setup or program, copy sections from one setup to another, and begin the process to store the changes. System—The three buttons in this section select parameters that affect the entire unit. The Global button opens a menu of parameters such as: checking the version of the operating system, available memory, performing a reset, dumping all objects, and running MIDIScope. The MIDI Receive button opens a menu to configure individual MIDI channels. The Panic button sends an All Notes Off message to the PC2 and the MIDI Out port. On power up, the Panic button is also used to enter the boot block to perform diagnostics, operating system updates, etc.
1-4
Introduction PC2/PC2X
Sound / Setup Select Internal Voices
Previous Group
MIDI Setups
Effects and Reverb KB3 Mode
Next Group
Piano 1
Piano 2
Clavier
Organ
Brass
1
2
3
4
5
6
7
8
Strings
Voices
Synths
Pads
Guitar
Bass
Drums
Percussion
9
10
11
12
13
14
15
16
E Piano 1 E Piano 2 Pop Keys
FX-A
Select
Wet / Dry
Mute A
FX-B
Select
FX Mode
Mute B
Demo
Figure 1-5
Sound/Setup Select and Effects and Reverb sections
Sound/Setup Select—Three groups of buttons are included in this section. Use the buttons in the first group to select one of the three performance modes: Internal Voices, MIDI Setups, or KB3 Mode. The second group, Previous Group and Next Group, is for use in the Internal Voices and MIDI Setups modes only. Depending on which mode you’re in, they select the previous or next group of programs or setups. Use the buttons in the third group, labelled 1–16, to select a category of Internal Voice programs or MIDI setups. In KB3 Mode, use these buttons to select one of the 16 KB3 programs. Effects and Reverb—Use the buttons in this section to select from two blocks of effects to apply effects and reverb to programs and setups. Data Entry
1
2
3
ABC
DEF
GHI
4
5
6
JKL
MNO
PQR
7
8
9
STU
VWX
YZ
+/-
0
Clear
UPPER / lower 0 - 9
Figure 1-6
Space
Cancel
Enter
No
Yes
Data Entry section
Data Entry—This section contains the Alpha Wheel, Minus (-) and Plus (+) buttons, and the Alphanumeric keypad. Use the Alpha Wheel or the Minus (-) and Plus (+) buttons to increase or decrease a value. Use the buttons in the Alphanumeric keypad to enter text, numbers, spaces, etc. This section also includes the Cancel (No) and Enter (Yes) buttons. Mod/Pitch Wheel Assembly (not shown)—Use the two wheels to vary modulation and pitch. Also included on the assembly is the SW4 and SW5 switches for use in the Internal Voices and MIDI Setups modes.
1-5
Introduction PC2R
PC2R PC2R Rear Panel L
®
R
Serial No.
Audio Outs
Model: PC2R Manufacturer: Young Chang Co., Ltd. Designed in USA Made in R.O.K.
PC2R
Audio Outs
Figure 1-7
In
Thru
Out
Power In
Digital Out
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING
Thru / Out
MIDI
9.0V 2.0A 14.0V~0.25A
MIDI Select Switch
Digital Out
MIDI Ports
Power In
PC2R rear panel
Rear Panel Features Audio Outs—Balanced 1/4” left and right audio output jacks to connect to an amplifier, mixer or sound system. Digital Out—RCA jack to connect to digital recorders and mixers. MIDI Ports—In, Thru/Out, and Out ports to connect the PC2 to other MIDI devices to receive, pass, and send MIDI data. MIDI Select Switch—Slide switch to select the operation of the MIDI Thru/Out port. Power In—Keyed four-pin connector to attach the Kurzweil 9VDC power adapter.
PC2R Front Panel Figure 1-8 is an illustration of the front panel for the PC2R. Enlargements of sections of this illustration follow, as well as a brief description of the front panel features. Power/ Volume PUSHPWR
VOL
Performance Performance
Zone 1
Zone 2
Main
Solo
Rotary Fast / Slow Perc On / Off
Shift
A
Drawbar Toggle
Zone 3
Split
Split Layer
Volume
Decay
Pitch
C 8'
4'
2'
1 3/5'
1 1/3'
Chorus / Vib On / Off
Chorus / Vib Depth
Headphones
LCD
Figure 1-8
1-6
D
5 1/3'
2 2/3'
Pre-Amp
Edit Edit / Store
Modes Group / Menu
Compare
Copy
Internal Voices
KB3
MIDI Setups
Panic
16'
1'
PC2R
Zone 4
Layer
B
Modes
Edit
PC2R Front Panel
Cancel
Enter
No
Yes
FX
MIDI Receive
Global
Demo
LCD Contrast
Introduction PC2R
Front Panel Features Power/Volume—Push to turn the power on/off and turn it to adjust the volume. Headphones—Standard 1/4” jack to connect headphones. Performance section—The buttons and knobs in this section are multi-function and their operation depends on which performance mode is active (Internal Voices, KB3, or MIDI Setups). Their labelling is color-coded to identify their operation for each of the performance modes. They are labelled as follows: white–Internal Voices mode, blue–MIDI Setups mode, and orange–KB3 mode.
PUSHPWR
VOL
Performance
Zone 1
Drawbar Toggle
Figure 1-9
Zone 3
Layer
Rotary Fast / Slow Perc On / Off
Shift
Zone 2
Main
Solo
A
Split
Volume
Zone 4
Split Layer
Decay
B
Pitch
C
D
16'
5 1/3'
8'
4'
2 2/3'
2'
1 3/5'
1 1/3'
Chorus / Vib On / Off
Chorus / Vib Depth
1'
Pre-Amp
Power/Volume, Headphones and Performance section
The top row of buttons are for use in each of the three performance modes. The button LEDs are tri-colored: Red, Green, and Amber. The function of a button depends on which performance mode is active and the LED color. In the Internal Voices mode, use these buttons to enter AutoSplit mode to add layers and splits. In MIDI Setups mode, use these buttons to solo a zone or select a zone for viewing or editing. In KB3 mode, these buttons control the effects for the current KB3 program. Figure 1-9 is an enlargement of the Performance section. An example of the operation of the Split button in each performance mode follows: Internal Voices mode, selecting the Split button switches to AutoSplit mode and adds a new sound below a preset split point. MIDI Setups mode (Zone 3), selecting the Split button selects Zone 3. KB3 mode (Decay), selecting the Split button switches between fast and slow decay for the percussion effect. The bottom row includes the Shift button and Knobs A–D. The Shift button controls the operation of Knobs A–D. The Shift button LED is also tri-colored (green, amber, and red). The function of Knobs A–D depends on which performance mode is active and the LED color. In Internal Voices or MIDI Setups mode, Knobs A–D control parameters and settings. In KB3 Mode, Knobs A–D control such functions as drawbar lengths, etc. Edit section—Use the eight buttons and the Alpha Wheel in this section to select programs and setups, and editing functions. Turn the Alpha Wheel to scroll through menus and categories to select a program or parameter. In Internal Voices and KB3 mode, use the Left and Right cursor buttons to select bank and program ID parameters, as well as some KB3 settings. While editing use these buttons to make selections.
1-7
Introduction PC2R
Edit Edit / Store
Figure 1-10
Group / Menu
Compare
Copy
Cancel
Enter
No
Yes
Edit section
Select the Edit/Store button to enter the edit mode for the current performance mode to edit programs, setups, etc. To save the changes, press the Edit/Store button again to enter the save dialog. In a performance mode, press the Group/Menu button to select a category of programs or setups. In edit mode, press the Group/Menu button to view the menu of parameters. When editing, the Compare button lets you hear the difference between an original and a modified setup or program. The Copy button allows you to copy sections from one setup to another. The Cancel (No) button exits an edit mode or answers no. In a performance mode, the Enter (Yes) button selects a program or setup and answers yes. In an edit mode, press Enter to enter menus for editing. Modes section—Use the buttons in this section to select one of the three performance modes: Internal Voices, KB3, or MIDI Setups. Three special mode buttons (FX, MIDI Receive, and Global) are also included in this section. The special mode buttons perform as follows: press the FX button to enter the effect edit mode, press the MIDI Receive button to configure individual MIDI channels, and press the Global button to select parameters that change the entire PC2R. Many helpful parameters are included in the Global menu such as: the operating system version, available memory, reset, dumping all objects, and MIDIScope.
Modes Internal Voices
KB3
MIDI Setups
FX
MIDI Receive
Panic
Global
Demo
Figure 1-11
Modes section and LCD Contrast
The Modes section also contains buttons to select the Panic function and Demo mode. These buttons are not individual buttons. They are selected by simultaneously pressing two buttons. To select the Panic function to send an All Notes Off message, simultaneously press the KB3 and the MIDI Setups buttons. To enter the Demo mode, simultaneously press the MIDI Receive and the Global buttons. Flashing LEDs in the Performance section indicate the location of the stored demos. LCD Contrast—Rotary potentiometer to adjust the LCD for the best visibility.
1-8
Chapter 2 Diagnostics Diagnostic Tests The following lists the diagnostic tests available for the PC2 Series. • • • • • • • • •
ROM Read-write RAM MABEL LISA Sound ROM ZRAM MIDI LED
If a PCX-1 Board is installed, the following tests are also available: • • • • •
PCX-1 ROM PCX-1 RW PCX-1 RAM PCX-1 MABEL PCX-1 SROM
Warning: Some diagnostic tests erase user programs and setups. If possible, be sure to save all user programs and setups, before entering diagnostics. For instructions, refer to Saving User Data in Chapter 5, page 5-1.
2-1
Diagnostics Entering Diagnostics
Entering Diagnostics 1. Apply power to the unit. When the Please wait... message appears in the LCD, quickly press and release the Panic button for PC2 keyboard units or the Edit button for PC2R rack units. The LCD should display the following:
Main menu Install engine
Figure 2-1
LCD example, entering diagnostics
2. Press either the Left or Right cursor button until Run
diagnostics appears in the LCD.
3. Press the Enter button. 4. The LCD displays the following:
Main menu Run one test
Figure 2-2
LCD example, diagnostic main menu
5. Press Enter to select the run one test mode. To select the run burn-in test mode, press either the Left or Right cursor button then press the Enter button to begin the tests.
Diagnostic Test Modes Run One Test Run One Test allows you to select an individual test, or to step through and run each available test. To step through the different tests, use the Left or Right cursor button. Press the Enter button to select the test.
Select test to run ROM test
Figure 2-3
2-2
LCD example, Run One Test
Diagnostics Test Results
At the completion of a test, whether pass or fail, press the Cancel button to exit the test. Press either the Left of Right cursor button to advance to the next test or another test in the sequence. At the completion of a test, press the Cancel button to return to the test menu. To exit diagnostics, turn the power off and on to return to normal operation.
Run Burn-in Burn-in continuously runs the following sequence of tests. • • • • •
ROM Read-write Sound ROM ZRAM MIDI
If a PCX-1 Board is installed, the sequence of tests is as follows: • • • • •
ROM Read-write MIDI PCX-1 ROM PCX-1 read
The LCD displays the test results at the completion of each test. To stop the burn-in process and view the test results for each test run, press the Cancel button. Use the Left or Right cursor button to scroll through the results of each test. To exit Run Burn-in and return to the main menu, press the Cancel button. To exit diagnostics, turn the power off and on to return to normal operation. Note: If a PCX-1 Board is installed, you must cycle the power after running the SROM or PCX-1 SROM tests. If you do not cycle the power, some tests may not run properly.
Test Results The top line of the LCD displays the test name to the left and test result to the right. Additional information, if any, is displayed on the bottom line of the LCD. At the completion of an individual test, the LCD displays the test results. An expected result is Pass, Fail, or Not Run. If a failure occurs, the LCD displays Fail. To the right of Fail, two characters can be displayed in parenthesis. These characters indicate the type of failure. If the test fails a (t) is displayed. If a hardware error occurs an (H) is displayed.
2-3
Diagnostics Description of Tests
Description of Tests ROM This test checks the software data (engine, boot, and setups) stored in FlashROM on the Engine Board. A failure of this test may indicate a problem with the Flash ROM chip (U5 on the Engine Board), associated circuitry, or the Engine Board.
Read-write This test is a combination of the RAM, MABEL and LISA tests. The Read-write test writes data to RAM and the MABEL and LISA registers then confirms that the data written can be read back successfully. A failure of this test indicates a problem with the Engine Board.
RAM The RAM test writes to the microprocessor RAM space and verifies that the write was successful. A failure of this test may indicate a problem with the RAM or related circuitry on the Engine Board.
MABEL This test performs a read-write of the MABEL registers and verifies that the data written can be read back successfully. A failure of this test may indicate a problem with a MABEL, related circuitry or the Engine Board.
LISA This test confirms that the Lisa chip (U15) is properly installed and successfully interfacing with the microprocessor. A failure of this test indicates a problem with Lisa, related circuitry or the Engine Board.
Sound ROM This test confirms that the Sound ROMs can be read by the MABELs by performing a checksum of the Sound ROMs. The computed checksum is then compared to the stored checksum. A failure of this test may indicate a problem with a Sound ROM (U19 or U20), or the Engine Board.
2-4
Diagnostics Description of Tests
ZRAM This test performs a quick read-write of the internal RAM and verifies that the data was successfully written and retained. A failure of this test may indicate a problem with the RAM or the Engine Board.
MIDI The MIDI test performs a loop-back of the serial port by sending a 23-byte pattern over the external MIDI link. This test requires a MIDI loop (a MIDI cable that connects two MIDI jacks). The test will fail if a MIDI cable is not connected between two MIDI jacks. Be sure to run this test with MIDI cables connected as follows: Note: Be sure to use a known working MIDI cable! 1. Connect a MIDI cable to the MIDI In and MIDI out jacks and run the test. 2. Connect a MIDI cable to the MIDI In and MIDI Out/Thru jack and set the Out/Thru switch on the rear panel to Out. Run the test. A failure of this test could be caused by failure of the serial port, other MIDI circuitry, or a problem on the Connector Board or the Engine Board.
LED This test lights all the front panel LEDs. To complete the test and obtain the test result, press the Cancel button. When the Cancel button is pressed the LEDs shut off and the test result is shown. A failure of this test may indicate a problem with the Front Panel Board(s), related circuitry or the Connector Board.
PCX-1 ROM This test checks the software data (engine, boot, and setups) stored in FlashROM on the PCX-1 Board. Failure of this test may indicate a problem with the Flash ROM chip (U5 on the PCX-1 Board), associated circuitry, or the PCX-1 Board.
PCX-1 RW This test is a combination of the RAM, MABEL and LISA tests. This test writes data to RAM and the MABEL and LISA registers then confirms that the data written can be read back successfully. A failure of this test indicates a problem with the PCX-1 Board.
PCX-1 RAM The PCX-1 RAM test writes to the microprocessor RAM space and verifies that the write was successful. A failure of this test may indicate a problem with the RAM or related circuitry on the PCX-1 Board.
2-5
Diagnostics Description of Tests
PCX-1 MABEL This test performs a read-write of the MABEL registers and verifies that the data written can be read back successfully. A failure of this test may indicate a problem with a MABEL, associated circuitry or the PCX-1 Board.
PCX-1 SROM The PCX-1 SROM test verifies that the PCX-1 MABELs can read the Sound ROMs by performing a checksum of the Sound ROMs. The computed checksum is then compared to the stored checksum. A failure of this test indicates a problem with a Sound ROM (U15 or U16) or the PCX-1 Board.
2-6
Chapter 3 PC2R Disassembly/Assembly Introduction This chapter contains all the procedures for the disassembly and reassembly for the PC2R—as well as instruments with factory-installed or after-market options. Warning: If possible, save all user programs and setups before disassembly. For instructions, refer to Saving User Data in Chapter 5, page 5-1.
Cables, Connectors Flat Ribbon Cables All flat ribbon cables with connectors are keyed, and therefore cannot be reversed. Most flat ribbon cables have locking cable clips. Be sure to reapply the clips when connecting cables. Flat ribbon cables that connect to picoflex connectors do not have locking cable clips. Some flat ribbon cables have exposed wires that insert directly into a wire trap connector. When disconnecting and connecting these cables, you must look for the marking on the edge of the cable denoting Pin 1 and be sure that you match it correctly with Pin 1 on the board.
Cable Routing In some cases, tape secures cable connections or fastens cables to the bottom enclosure. Always peel back the tape from one side when disconnecting cables so that the tape remains properly positioned.
Required Tools and Materials • • • •
No. 1 Phillips head screwdriver No. 2 Phillips head screwdriver Small flat screwdriver Needle-nose pliers
3-1
PC2R Disassembly/Assembly Opening the PC2R
Opening the PC2R Removing the Top Cover Before you begin disassembly, please be sure that the power is off, and that the AC power adapter and all other cables are disconnected. The top cover is secured to the PC2R with seven screws: three on the top, one on each side, and two on the rear. See Figure 3-1.
Figure 3-1
PC2R top cover
1. Remove the seven screws that secure the top cover.
Figure 3-2
Removing the top cover
2. Refer to Figure 3-2. Slide the top cover back from the Front Panel Assembly to release the top cover from the bottom enclosure, and place the top cover safely aside to avoid damage.
Replacing the Top Cover 1. Place the top cover in position and slide it toward the Front Panel Assembly. 2. Install the seven screws that secure the top cover. See Figure 3-1.
3-2
PC2R Disassembly/Assembly Opening the PC2R
Removing the Connector Board 1. Following Steps 2– 5, disconnect the cables listed in Table 3-1.
Ref.
Name
Cable Type
Destination
J301
PC2 Power
stranded wire
Engine Board
J302
PC2R Audio In
flat ribbon
Engine Board
J303
MIDI/CPU
flat ribbon
Engine Board
J304
Front Panel
flat ribbon
Right Front Panel Board
J322
FP/Vol/Pwr/Hp
stranded wire
Headphone/Vol/Pwr Sw Board
Table 3-1
Connector Board cables
2. Disconnect the stranded wire cable from J301 on the Connector Board. 3. Remove the cable locking clip and disconnect the flat ribbon cable from J304. Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable. 4. Disconnect the stranded wire cable from J322. 5. The flat ribbon cables connected to J302 and J303 use wire trap connectors. The shielding has been removed from these cables to expose the wires. The wires are directly inserted into these connectors. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Connector Board. 6. Remove the two screws that secure the MIDI jacks to the rear panel. 7. Remove the two nuts that secure the 1/4” audio out jacks to the rear panel. 8. Remove the three screws that secure the Connector Board to the bottom enclosure. Caution: VR1 on the Connector Board is attached to the heat sink. When you remove the Connector Board and heat sink, be sure to keep the board and heat sink stable so that you do not damage VR1 or its connection. 9. Remove the four screws that secure the heat sink to the bottom enclosure. 10. Slide the Connector Board and heat sink away from the rear panel and toward the Front Panel Assembly. This will free the jacks and MIDI switch from their positions on the rear panel. 11. Tilt up the rear panel edge of the Connector Board and heat sink. Carefully lift the board and heat sink out of the PC2R, and place them on a flat protected surface.
3-3
PC2R Disassembly/Assembly Opening the PC2R
Replacing the Connector Board 1. Tilt down the inner edge (closest to the Front Panel Assembly) of the Connector Board and heat sink, and place it flat on to the bottom enclosure. 2. Slide the Connector Board and heat sink toward the rear panel so that the jacks and MIDI switch are positioned through their openings in the rear panel. 3. Install the four screws that secure the heat sink to the bottom enclosure. 4. Install the three screws that secure the Connector Board to the bottom enclosure. 5. Install the two screws that secure the MIDI jacks to the rear panel. 6. Install the two nuts that secure the 1/4” audio out jacks to the rear panel. 7. Connect the wire trap flat ribbon cables in the following order. Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the five-wire flat ribbon cable from the Engine Board into the wire trap connector at J302 on the Connector Board. Insert the ten-wire flat ribbon cable from the Engine Board into the wire trap connector at J303 on the Connector Board. 8. Connect the stranded wire cable from the Headphone/Volume/Power Switch Board to J322. 9. Connect the flat ribbon cable from the Right Front Panel Board to J304. Be sure to install the cable locking clip. 10. Connect the stranded wire cable from the Engine Board to J301.
3-4
PC2R Disassembly/Assembly Opening the PC2R
Removing the Polyphony Expansion Board (PCX-1) The Polyphony Expansion Board is mounted onto the Engine Board and held in place with four nylon PC board standoffs and a 24-pin female connector on the underside of the board. It is also secured to the bottom enclosure with two screws. 1. Remove the two screws that secure the PCX-1 Board to the bottom enclosure. 2. Squeeze the top of one of the four nylon PC board standoffs, and lift the corner of the board until it clears that standoff. Repeat for the other three standoffs. 3. When the board is free of the standoffs, lift the board straight up to disconnect the 24-pin connector from the Engine Board.
24-pin female connector on PCX-1 board
24-pin male header on Engine board
Figure 3-3
Removing the Polyphony Expansion Board (PCX-1)
Replacing the Polyphony Expansion Board (PCX-1) There are two cables routed underneath the PCX-1 Board: a flat ribbon cable from the LCD to the Engine Board, and a stranded wire cable from the Headphone/Volume/Power Switch Board to the Connector Board. Before you replace the PCX-1 Board, be certain that these cables are properly positioned. 1. Place the PCX-1 Board over the four standoffs. This should properly position the 24-pin connector over the 24-pin header on the Engine Board. 2. Press the PCX-1 Board down, securing the 24-pin connector, and snapping the board onto the standoffs. Note: If you are installing a new PCX-1 Board, check the old board for Sound ROM options. If the unit has Sound ROM options, be sure to install them on the new board. 3. Install the two screws that secure the PCX-1 Board to the bottom enclosure.
3-5
PC2R Disassembly/Assembly Opening the PC2R
Removing the Engine Board 1. If the PC2R you are servicing has a PCX-1 Board installed, remove it following the procedure described on page 3-5. 2. Following Steps 3–6, disconnect the cables listed in Table 3-2.
Ref.
Name
Cable Type
Destination
J304
Front Panel
flat ribbon
RIght Front Panel to Connector
J402
PC2 Power
stranded wire
Connector Board
J403
MIDI/CPU
flat ribbon
Connector Board
J405
Backlight
stranded wire
LCD Board
J406
LCD
flat ribbon
LCD Board
J412
PC2 Audio Out
flat ribbon
Connector Board
Table 3-2
Engine Board cables
3. Remove the cable locking clip and disconnect the flat ribbon cable from J304 on the Connector Board. Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable. 4. The flat ribbon cables connected to J403 and J412 use wire trap connectors. The shielding has been removed from these cables to expose the wires. The wires are directly inserted into these connectors. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Engine Board. 5. Remove the cable locking clip and disconnect the flat ribbon cable from location J406 on the Engine Board. Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable. 6. Disconnect the stranded wire cables from locations J402 and J405 on the Engine Board. 7. Remove the five screws that secure the Engine Board to the bottom enclosure and remove the Engine Board.
Replacing the Engine Board 1. Place the Engine Board on the bottom enclosure. 2. Install the five screws that secure the Engine Board to the bottom enclosure. 3. Connect the stranded wire cable from the Connector Board to J402. 4. Connect the stranded wire cable from the LCD Board to J405. 5. Connect the flat ribbon cable from the LCD Board to J406. Be sure to install the cable locking clip. 6. Connect the wire trap flat ribbon cables in the following order.
3-6
PC2R Disassembly/Assembly Opening the PC2R
Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the five-wire flat ribbon cable from the Connector Board into the wire trap connector at J412 on the Engine Board. Insert the ten-wire flat ribbon cable from the Connector Board into the wire trap connector at J403 on the Engine Board. 7. Connect the flat ribbon cable from the Right Front Panel Board to J304 on the Connector Board. Be sure to install the cable locking clip. 8. If you removed a PCX-1 Board, install it following the procedure on page 3-5.
3-7
PC2R Disassembly/Assembly Front Panel Assembly
Front Panel Assembly The Front Panel Assembly consists of the front panel faceplate, a mounting bracket for the front panel boards, and four printed circuit boards. The boards mounted on the Front Panel Assembly are the Right Front Panel, LCD, Left Front Panel, and Headphone/Volume/Power Switch.
Removing the Front Panel Assembly Refer to Figure 3-4. The bottom edge of the Front Panel Assembly and front edge of the bottom enclosure connect to form a lip.
Lip
Figure 3-4
Front Panel Assembly and bottom enclosure
1. Tilt up the front edge of the PC2R. 2. Using a #1 screwdriver, remove the four screws that secure the Front Panel Assembly to the bottom enclosure. Note: Before continuing, be sure that you have a soft surface to rest the Front Panel Assembly on so that the front panel switches, jacks, and rotary potentiometers are not damaged. 3. Slide the Front Panel Assembly forward and away from the bottom enclosure. Caution: There are four cables connected to the Front Panel Assembly. You do not need to disconnect these cables.
Replacing the Front Panel Assembly 1. Position the Front Panel Assembly so that its bottom edge is under the front edge of the bottom enclosure. 2. Tilt up the front edge of the PC2R and install the four black flat head machine screws.
3-8
PC2R Disassembly/Assembly Front Panel Assembly
Removing the Front Panel Faceplate Note: If the service you are performing only requires that you have access to the front panel boards for component testing, component replacement or installing a replacement board, it is not necessary to remove the front panel faceplate. Refer to the procedure for the front panel board you need to remove and follow the steps described. 1. Follow the procedure to remove the Front Panel Assembly. 2. Refer to Figure 3-5 on page 3-10. Four flat head machine screws secure the front panel faceplate to the Front Panel Assembly. These screws are located along the top of the Front Panel Assembly. Using a #1 screwdriver, remove the four screws. 3. Place the front panel faceplate safely aside to avoid accidental damage.
Replacing the Front Panel Faceplate 1. Position the front panel faceplate onto the Front Panel Assembly. Note: Verify that the rotary potentiometers, jacks, and switch button caps are correctly positioned through their openings in the front panel faceplate. Turn the rotary potentiometers to be sure that they move freely; and push the switch button caps to be sure that their corresponding switches click. 2. Install the four flat head machine screws that secure the front panel faceplate to the Front Panel Assembly.
Front Panel Boards The front panel boards are secured to a mounting bracket. This bracket is secured to the front panel faceplate. If the service you are performing only requires that you have access to the front panel boards for component testing, component replacement or installing a replacement board, it is not necessary to remove the front panel faceplate or remove the boards from the mounting bracket. Figure 3-5 shows the position of the boards on the Front Panel Assembly and the placement of the front panel faceplate screws located above the boards. Refer to the procedure for the front panel board you need to remove and follow the steps described.
3-9
PC2R Disassembly/Assembly Front Panel Assembly
crews
late s
facep
Headphone/Volume/ Power Switch Board Left Front Panel Board LCD Board Right Front Panel Board
Figure 3-5
Front panel faceplate screw locations
Removing the Right Front Panel Board 1. Remove the Front Panel Assembly, as described on page 3-8. It is not necessary to disconnect all the cables that connect the Front Panel Assembly boards to boards located on the bottom enclosure. 2. Remove the cable locking clip and disconnect the flat ribbon cable from J601 on the Right Front Panel Board. 3. Disconnect the flat ribbon cable from J602. This cable uses a picoflex molex connector. To disconnect it, grip the connector and pull it out straight. Caution: Do not wiggle the connector back and forth. Doing so, could cause damage to the header. Note: Be aware of the marking (red or black) on the cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the board. 4. It is not necessary to remove the front panel faceplate to remove the Right Front Panel Board. Two of the screws that secure the front panel faceplate to the Front Panel Assembly are located above the Right Front Panel Board. Refer to Figure 3-5 and remove the two screws. 5. Remove the three screws that secure the Right Front Panel Board to the mounting bracket, and remove the Right Front Panel Board.
3-10
PC2R Disassembly/Assembly Front Panel Assembly
Replacing the Right Front Panel Board 1. Place the Right Front Panel Board in position on the mounting bracket and line up the screw holes. Note: Verify that the rotary potentiometers and switch button caps are correctly positioned through their openings in the front panel faceplate. Turn the rotary potentiometers to be sure that they move freely; and push the switch button caps to be sure that their corresponding switches click. 2. Install the three screws that secure the board to the mounting bracket. 3. Install the two screws that secure the front panel faceplate. 4. Connect the flat ribbon cable from the Connector Board to Right Front Panel Board, location J601. Be sure to install the cable locking clip. 5. Connect the flat ribbon cable from the Left Front Panel Board to the Right Front Panel Board, location J602. Caution: The side walls of the picoflex header are different. The Pin 1 side is slightly wider than the other side; and the corresponding sides of the connector incorporate the differences. When you connect the cable, be sure to orient the marking (red or black) on the cable that indicates the connection to Pin 1 on the board to prevent damage to the header or a failure caused by an improper connection. 6. Follow the procedure on page 3-8 to install the Front Panel Assembly.
Removing the LCD Board 1. Remove the Front Panel Assembly, as described on page 3-8. It is not necessary to disconnect all the cables that connect the Front Panel Assembly boards to boards located on the bottom enclosure. 2. Disconnect the stranded wire cable soldered to the LCD Board from location J405 on the Engine Board. 3. Remove the locking cable clip and disconnect the flat ribbon cable soldered to the LCD Board from location J406 on the Engine Board. If the unit you are servicing has a PCX-1 Board installed, this cable is routed underneath the PCX-1 Board. After you disconnect the cable, carefully slide it so that it is positioned close to the left edge of the PCX-1 Board (left edge as viewed standing at the front panel). Gently pull the cable toward the Front Panel Assembly to completely free it from underneath the PCX-1 Board. 4. It is not necessary to remove the front panel faceplate to remove the LCD Board. One screw that secures the faceplate to the Front Panel Assembly is located above the LCD Board. Refer to Figure 3-5 and remove the screw. 5. Remove the two screws that secure the LCD Board to the mounting bracket, and remove the LCD.
3-11
PC2R Disassembly/Assembly Front Panel Assembly
Replacing the LCD Board 1. Place the LCD Board in position over the mounting standoffs on the mounting bracket. 2. Install the two screws that secure the LCD Board to the mounting bracket. 3. Install the screw that secures the front panel faceplate to the Front Panel Assembly. 4. Connect the stranded wire cable from the LCD Board to location J405 on the Engine Board. 5. If the unit you are servicing has a PCX-1 Board installed, route the flat ribbon cable beneath the board and connect it to location J406 on the Engine Board. Be sure to install the cable locking clip. 6. Follow the procedure on page 3-8 to install the Front Panel Assembly.
Removing the Left Front Panel Board 1. Remove the Front Panel Assembly, as described on page 3-8. It is not necessary to disconnect all the cables that connect the Front Panel Assembly boards to boards located on the bottom enclosure. 2. Disconnect the flat ribbon cable from J603. This cable uses a picoflex molex connector. To disconnect it, grip the connector and pull it out straight. Caution: Do not wiggle the connector back and forth. Doing so, could cause damage to the header. Note: Be aware of the marking (red or black) on the cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the board. 3. It is not necessary to remove the front panel faceplate to remove the Left Front Panel Board. One screw that secures the front panel faceplate to the Front Panel Assembly is located above the Left Front Panel Board. Refer to Figure 3-5 and remove the screw. 4. Remove the two screws that secure the Left Front Panel Board to the mounting bracket. 5. Refer to Figure 3-6. This illustration shows the location of a soldered connection between the Left Front Panel and Headphone/Volume/Power Switch Boards. To remove the board, desolder this connection from the Left Front Panel Board. Note: This illustration shows the Headphone/Volume/Power Switch Board lying flat to indicate the connection between it and the Left Front Panel Board. In its normal position, it is perpendicular to the Left Front Panel Board.
3-12
PC2R Disassembly/Assembly Front Panel Assembly
HP/Vol/Pwr Sw Board
Left Front Panel Board
J603 1
Circuit side
J604
1 J1
J2
soldered connection
Figure 3-6
6.
Left Front Panel and Headphone/Volume/Power Switch Board connection
Remove the Left Front Panel Board.
Replacing the Left Front Panel Board 1. Place the Left Front Panel Board in position on the mounting bracket and line up the screw holes. 2. Install the two screws that secure the board to the mounting bracket. Note: Verify that the rotary potentiometers and switch button caps are correctly positioned through their openings in the front panel faceplate. Turn the rotary potentiometers to be sure that they move freely; and push the switch button caps to be sure that their corresponding switches click. 3. Install the screw that secures the front panel faceplate. 4. Connect the flat ribbon cable from the Right Front Panel Board to the Left Front Panel Board, location J603. Caution: The side walls of the picoflex header are different. The Pin 1 side is slightly wider than the other side; and the corresponding sides of the connector incorporate the differences. When you connect the cable, be sure to orient the marking (red or black) on the cable that indicates the connection to Pin 1 on the board to prevent damage to the header, connector or a failure caused by an improper connection. 5. Refer to Figure 3-6. Solder the wire connection from the Headphone/Volume/Power Switch Board to the location indicated on the Left Front Panel Board. 6. Follow the procedure on page 3-8 to install the Front Panel Assembly.
3-13
PC2R Disassembly/Assembly Front Panel Assembly
Removing the Headphone/Volume/Power Switch Board 1. Remove the Front Panel Assembly, as described on page 3-8. It is not necessary to disconnect all the cables that connect the Front Panel Assembly boards to boards located on the bottom enclosure. 2. Follow the procedure on page 3-9 to remove the front panel faceplate. 3. Disconnect the stranded wire cable that connects the Headphone/Volume/Power Switch Board to the Connector Board. 4. Remove the nut and flat washer that secure the headphone jack to the front panel mounting plate. 5. Remove the volume knob. 6. Remove the nut and flat washer that secure the volume/power switch to the front panel mounting plate. 7. Refer to Figure 3-6. This illustration shows the location of a soldered connection between the Left Front Panel and Headphone/Volume/Power Switch Boards. To remove the board, desolder this connection from the Headphone/Volume/Power Switch Board. Note: This illustration shows the Headphone/Volume/Power Switch Board lying flat to indicate the connection between it and the Left Front Panel Board. In its normal position, it is perpendicular to the Left Front Panel Board. 8. Remove the Headphone/Volume/Power Switch Board.
Replacing the Headphone/Volume/Power Switch Board 1. Position the Headphone/Volume/Power Switch Board on the mounting bracket. 2. Install the nut and washer that secure the headphone jack to the mounting bracket. 3. Install the nut and washer that secure the volume/power switch to the mounting bracket. 4. Install the volume knob. 5. Refer to Figure 3-6. Solder the wire connection from the Left Front Panel Board to Pin 5 of J2 on the Headphone/Volume/Power Switch Board. 6. Follow the procedure on page 3-9 to install the front panel faceplate. Note: Be sure that the Volume/Power Switch moves freely. 7. Follow the procedure on page 3-8 to install the Front Panel Assembly.
3-14
Chapter 4 PC2/PC2X Disassembly/Assembly Introduction This chapter contains all the procedures for the disassembly and reassembly of both the 76-note PC2 and the 88-note PC2X—as well as instruments with factory-installed or after-market options. There are five main sections: Opening the PC2/PC2X, Top Enclosure, PC2 Keyboard Assembly, and PC2X Keyboard Assembly. Warning: If possible, save all user programs and setups before disassembly. For instructions, refer to Saving User Data in Chapter 5, page 5-1.
Notes, Cautions, Warnings Please pay special attention to all Notes, Cautions, and Warnings as they not only point out specific instructions, but also alert you to differences between the 76-note PC2 keyboard and the 88-note PC2X keyboard.
Cables, Connectors Flat Ribbon Cables All flat ribbon cables with connectors are keyed, and therefore cannot be reversed. Most flat ribbon cables have locking cable clips. Be sure to reapply the clips when connecting cables. Some flat ribbon cables have exposed wires that insert directly into a wire trap connector. When disconnecting and connecting these cables, you must look for the marking on the edge of the cable denoting Pin 1 and be sure that you match it correctly with Pin 1 on the board.
Cable Routing In some cases, tape secures cable connections or fastens cables to the bottom enclosure. Always peel back the tape from one side when disconnecting cables so that the tape remains properly positioned.
Required Tools and Materials • • • • • • •
No. 1 Phillips head screwdriver No. 2 Phillips head screwdriver Small flat screwdriver Dowel (3mm diameter) Needle-nose pliers Small blunt-end tool (Q-Tip, toothpick, etc.) Foam blocks
4-1
PC2/PC2X Disassembly/Assembly Opening the PC2/PC2X
Opening the PC2/PC2X PC2 Bottom Refer to Figure 4-1. Arrows indicate the locations of the enclosure support wall, endcap and rear panel screws.
Endcap screws
Endcap screws
Keyboard
Enclosure support wall screws
Access panel
*
*
Rear panel screws Rear panel *Endcap locking bracket screws
Figure 4-1
PC2 bottom enclosure
Caution: Do not remove the endcap or rear panel screws at this point of the procedure. 1. Tilt the PC2 up and remove the eight enclosure support wall screws. 2. Place the unit flat on your work surface. 3. Move the unit so that the rear panel portion of the unit hangs over the edge of your work surface. This gives you access to the seven screws that secure the rear panel portion of the top enclosure to the bottom enclosure. Remove the seven screws. Note: Two of the rear panel screws also secure the rear panel portion of the access panel. It is not necessary to remove the five remaining access panel screws. 4. Slide the unit back onto the work surface.
4-2
PC2/PC2X Disassembly/Assembly Opening the PC2/PC2X
PC2X Bottom Refer to Figure 4-2. Arrows indicate the locations of the enclosure support wall, endcap and rear panel screws.
Endcap screws
Endcap screws
Keyboard
Enclosure support wall screws
Access panel
*
*
Rear panel screws Rear panel *Endcap locking bracket screws
Figure 4-2
PC2X bottom enclosure
Caution: Do not remove the endcap or rear panel screws at this point of the procedure. 1. Tilt the PC2X up and remove the eight enclosure support wall screws. 2. Place the unit flat on your work surface. 3. Move the unit so that the rear panel portion of the unit hangs over the edge of your work surface. This gives you access to the nine screws that secure the rear panel portion of the top enclosure to the bottom enclosure. Remove the nine screws. Note: Two of the rear panel screws also secure the rear panel edge of the access panel. It is not necessary to remove the five remaining access panel screws. 4. Slide the unit back onto the work surface.
4-3
PC2/PC2X Disassembly/Assembly Opening the PC2/PC2X
Removing the Top Enclosure 1. Depending on the unit you are servicing, follow the procedures described on page 4-2 for the PC2 bottom or page 4-3 for the PC2X bottom. 2. Refer to Figure 4-3. Note: Figure 4-3 is an illustration of the PC2 rear panel. An illustration of the PC2X has not been included because the difference between the two is minimal. The quantity and position of the endcap screws is identical. 3. Remove the four screws that secure the endcaps to the rear panel. Endcap screws
Power I / 0
MIDI Adapter In
Thru / Out
Pedals In
Thru / Out
Out
LCD Contrast
Digital Out
9.0V 2.0A 14.0V~0.25A
Switch 1
Inputs 2
3
Continuous 1
Breath 2
Audio Outs Ribbon Left
Right
Headphones
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
Manufacturer: Young Chang Co., LTD. Made in ROK
Serial No.
PC2
Endcap screws
Figure 4-3
PC2 rear panel
Caution: The following steps describe removing the left and right endcaps. To avoid damage to the endcaps, be sure to hold onto each endcap when removing the screws. When the endcap screws are removed, the endcap is free of the unit. 4. Refer to Figure 4-1 for the PC2 or Figure 4-2 for the PC2X. Move the unit so that one end hangs over the edge of your work surface. Remove the four endcap screws from the bottom enclosure. One of these screws secures the endcap locking bracket. When you remove the endcap locking bracket screw, the bracket remains loosely in the endcap assembly. Set the endcap safely aside. Repeat for the other endcap. 5. Refer to Figure 4-4. The bottom edge of the rear panel and back edge of the bottom enclosure connect to form a lip. The rear panel screws secure the lip. Note: Figure 4-4 is an illustration of the PC2. An illustration of the PC2X has not been included because the difference between the two is minimal. The only difference is the spacing and quantity of the rear panel screws. If you are servicing a PC2, there are seven screws securing the rear panel portion of the top enclosure to the bottom enclosure. If you are servicing a PC2X, there are nine screws.
4-4
PC2/PC2X Disassembly/Assembly Opening the PC2/PC2X
Rea
r pa
nel
w scre
loca
tion
s
Lip
Figure 4-4
Top cover and bottom enclosure
Warning: Be sure to have your work surface prepared. This includes placing foam blocks behind the unit. When the top enclosure is removed, place it on the foam blocks to avoid damaging the Alpha Wheel, control panel buttons, and sliders. The following procedure requires enough room behind the rear of the unit to place the top enclosure face down on your work surface. 6. Grip each end of the top enclosure and rotate it back approximately two inches. This separates the bottom edges of the top enclosure and bottom enclosure. 7. Lift the top enclosure straight up. 8. Turn the top enclosure over and place it face down onto your work surface. Caution: Table 4-1 lists the cables, by board location, from the top enclosure to the assembly they connect to on the bottom enclosure. You do not need to disconnect these cables.
Top cover Assembly Connector Board
Bottom Enclosure Keyboard Assembly
Connector Board
Keyboard Assembly
FP Board
Button Board/Wheel Assembly
Connector Board
Mod Wheel Assembly
Table 4-1
Top cover and bottom enclosure cables
4-5
PC2/PC2X Disassembly/Assembly Opening the PC2/PC2X
Replacing the Top Enclosure 1. Position the top enclosure behind the bottom enclosure. 2. Move the top enclosure so that the bottom edge of the rear panel is positioned under the bottom enclosure edge. See Figure 4-4 on page 4-5. Note: Verify that the cables listed in Table 4-1 are lying flat on the bottom enclosure. Be sure that all other cables are tucked between the top enclosure and the enclosure support walls. 3. Hold the top enclosure safely in place and move the unit so that one end of the rear panel edge hangs over the edge of your work surface and install the rear panel screw at that end. Slide the unit back onto your work surface. Repeat for other end. Refer to Figure 4-1 for the PC2 or Figure 4-2 for the PC2X. Warning: Perform Steps 3 and 4 separately. Combining these steps could cause the top enclosure to flip away from the bottom enclosure or off of your work surface. 4. Move the unit so that the rear panel edge of the unit hangs over the edge of your work surface and install the remaining screws. Note: If you are servicing a PC2, there are five remaining rear panel screws to install. If you are servicing a PC2X, there are seven remaining screws.
Closing the PC2/PC2X Warning: The following procedure assumes that you have completed Steps 3 and 4 in Replacing the Top Enclosure. If you have not completed these steps, do so before continuing. 1. Refer to Figure 4-1 for the PC2 or Figure 4-2 for the PC2X. Tilt the unit up and install the eight enclosure support wall screws. 2. Slide one side of the unit off of your work surface and hold the appropriate endcap in position. Install the four endcap screws in the bottom enclosure. Repeat for the other endcap. 3. Refer to Figure 4-3. Install the four endcap screws in the rear panel.
4-6
PC2/PC2X Disassembly/Assembly Top Enclosure
Top Enclosure The top enclosure includes five boards: Connector, Front Panel, LCD, Slider, and Engine. The Right and Left Enclosure Support Walls are also included on the top enclosure. Figure 4-5 shows the placement of the enclosure support walls. Figure 4-6 shows the placement of the boards.
Left Enclosure Support Wall
Right Enclosure Support Wall
Figure 4-5
Top enclosure, enclosure support walls
Engine Board
Slider Board LCD Board
Front Panel Board Connector Board
Figure 4-6
Top enclosure, board locations
4-7
PC2/PC2X Disassembly/Assembly Top Enclosure
Removing the Enclosure Support Walls Left Enclosure Support Wall 1. Remove the four screws that secure the left enclosure support wall to the top enclosure, and remove the left enclosure support wall.
Right Enclosure Support Wall 1. Remove the six screws that secure the right enclosure support wall to the top enclosure, and remove the right enclosure support wall.
Replacing the Enclosure Support Walls Left Enclosure Support Wall 1. Align the center screw holes of the three-hole groupings in the left enclosure support wall with the thread marks in the extrusion. 2. Install the four screws that secure the left enclosure support wall to the top enclosure.
Right Enclosure Support Wall 1. Align the center screw holes of the three-hole groupings in the right enclosure support wall with the thread marks in the extrusion. 2. Install the six screws that secure the right enclosure support wall to the top enclosure.
Removing the Connector Board 1. Follow the procedure described on page 4-8 to remove the right enclosure support wall. 2. Following Steps 3–5, disconnect the cables listed in Table 4-2.
Ref.
Name
Cable Type
Destination
J301
PC2 Power
stranded wire
Engine Board
J302
Audio
flat ribbon
Engine Board
J303
MIDI/CPU
flat ribbon
Engine Board
J304
Front Panel
flat ribbon
Front Panel Board
J305
Slider
flat ribbon
Slider Board
J306
Treble
flat ribbon
Keyboard Assembly
J307
Bass
flat ribbon
Keyboard Assembly
J308
Wheels
flat ribbon
Mod Wheel Assembly
Table 4-2
Connector Board cables
3. Disconnect the stranded wire cable from J301 on the Connector Board.
4-8
PC2/PC2X Disassembly/Assembly Top Enclosure
4. Remove the cable locking clips and disconnect the flat ribbon cables from J304, J306, and J307. Be sure to set the cable locking clips safely aside so that you can install them when you reconnect the cables. Note: The cables used throughout the PC2/PC2X are bundled and routed so that their locations and destinations seem obvious. However, to avoid reversing the Bass and Treble cables when reconnecting, mark one or both cables designating B for Bass and T for Treble. 5. The flat ribbon cables connected to J302, J303, J305, and J308 use wire trap connectors. The shielding has been removed from the end of these cables to expose the wires. The wires are directly inserted into these connectors. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Connector Board. 6. Remove the five screws that secure the Connector Board to the rear panel. Two of these screws are longer than the others and have spacers located between the screw and the rear panel. See Figure 4-7 for the locations of the screws and spacers. Note: Do not remove any other hardware from this portion of the rear panel.
Power I / 0
MIDI Adapter In
Thru / Out
Pedals In
Thru / Out
Out
LCD Contrast
Digital Out
Switch 1
Inputs 2
3
Continuous 1
Breath 2
Audio Outs Ribbon Left
Right
Headphones
9.0V 2.0A 14.0V~0.25A
MIDI jack screws
*
* * longer screws with spacers Figure 4-7
Rear panel hardware locations
7. Remove the two screws that secure the MIDI jacks to the rear panel. See Figure 4-7. 8. Remove the Connector Board.
4-9
PC2/PC2X Disassembly/Assembly Top Enclosure
Replacing the Connector Board 1. Hold the Connector Board and position it so that the power switch, LCD Contrast potentiometer, and the rear panel jacks are correctly positioned through the rear panel portion of the top enclosure. 2. Install the two screws that secure the MIDI jacks to the rear panel. See Figure 4-7. 3. Install the five screws that secure the Connector Board to the rear panel. Be sure to place a spacer and use one of the longer screws at the locations noted in Figure 4-7. 4. Connect the wire trap flat ribbon cables in the following order. Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the five-wire flat ribbon cable from the Engine Board into the wire trap connector at J302 on the Connector Board. Insert the seven-wire flat ribbon cable from the Slider Board into the wire trap connector at J305 on the Connector Board. Insert the six-wire flat ribbon cable from the Mod Wheel Assembly into the wire trap connector at J308 on the Connector Board. Insert the ten-wire flat ribbon cable from the Engine Board into the wire trap connector at J303 on the Connector Board. 5. Connect the flat ribbon cables from the Keyboard Assembly to J306 and J307. Be sure to install a cable locking clip on each connector. 6. Connect the flat ribbon cable from the Front Panel Board to J304 on the Connector Board. Be sure to install a cable locking clip on the connector. 7. Connect the stranded wire cable from the Engine Board to J301 on the Connector Board. 8. Follow the procedure on page 4-8 to install the right enclosure support wall.
Removing the Front Panel Board 1. Follow the procedure described on page 4-8 to remove the right enclosure support wall. 2. Follow the procedure described on page 4-8 to remove the Connector Board. 3. Following Steps 4 and 5, disconnect the cables listed in Table 4-3.
4-10
PC2/PC2X Disassembly/Assembly Top Enclosure
Ref.
Name
Cable Type
Destination
J601
IBBB
flat ribbon
Button Board/Wheel Assembly
J602
FP Bridge
flat ribbon
Slider Board
Table 4-3
Front Panel Board cables
4. The flat ribbon cables connected to J601 and J602 use wire trap connectors. The shielding has been removed from the end of these cables to expose the wires. The wires are directly inserted into these connectors. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Front Panel Board. 5. Remove the cable locking clip and disconnect the flat ribbon cable at J604 on the Front Panel Board. Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable. Note: The flat ribbon cable at location J604 was disconnected following the procedure to remove the Connector Board. It is not necessary to disconnect it from the Front Panel Board. However, if you are replacing the Front Panel Board with a replacement board, be sure to disconnect the cable and connect it to the replacement board. 6. Five of the screws that secure the right enclosure support wall also secure the front panel edge of the Front Panel Board. You have already removed the enclosure support wall, but two screws remain securing this edge of the board. See Figure 4-8, and remove the two remaining screws. PC board clamps and screws
J601
J604 J602
Front panel edge screws
Figure 4-8
Front Panel Board, screw locations
7. Remove the six screws that secure the three PC board clamps (two screws per clamp). These screws also secure the rear panel edge of the Front Panel Board.
4-11
PC2/PC2X Disassembly/Assembly Top Enclosure
The LCD is mounted onto a bezel that is secured to the Front Panel Board with small pegs that snap into holes on the Front Panel Board. Removing the LCD requires cutting the tie wraps that bundle the LCD cables to cable mounts positioned along the rear panel. It is not necessary to remove the LCD from the unit. Remove the four screws that secure the LCD to the front panel bezel. Lift the LCD up from the bezel and fold it over so that the circuit side of the LCD is positioned above the Slider Board. For protection, place a piece of anti-static material between the LCD and Slider Boards. 8. Lift the Front Panel Board up from the top enclosure. The spinknob and switch button caps should remain in place. Caution: Each switch button cap uses a set of small pegs to mount the cap to the Front Panel Board. The button caps are mounted individually or in clusters. If a cap becomes separated from the board, be careful that a peg is not inadvertently broken.
Replacing the Front Panel Board 1. Position the Front Panel Board onto the top enclosure, then raise the top enclosure up slightly to verify that the spinknob and switch button caps are correctly positioned through their openings in the top enclosure. 2. Align the center screw holes of the three-hole groupings on the front panel edge of the board with the thread marks in the extrusion and install the two screws that secure the front panel edge. See Figure 4-8. 3. Place a PC board clamp in position. Align the center screw holes of the clamp with the thread marks in the extrusion and install the two screws that secure the clamp. Repeat for the other two clamps. 4. Position the LCD onto the front panel bezel and install the four screws that secure it to the bezel. 5. Connect the wire trap flat ribbon cables in the following order. Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the five-wire flat ribbon cable from the Button Board into the wire trap connector at J601 on the Front Panel Board. Insert the eight-wire flat ribbon cable from the Slider Board into the wire trap connector at J602 on the Front Panel Board. 6. If you have disconnected the flat ribbon cable from J604, reconnect it. Be sure to install the cable locking clip. 7. Follow the procedure on page 4-10 to install the Connector Board. 8. Follow the procedure on page 4-8 to install the right enclosure support wall.
4-12
PC2/PC2X Disassembly/Assembly Top Enclosure
Removing the LCD Board 1. Follow the procedure described on page 4-8 to remove the right enclosure support wall. 2. Disconnect the stranded wire from location J405 on the Engine Board. 3. Remove the cable locking clip and disconnect the flat ribbon cable from J406 on the Engine Board. Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable. 4. Removing the LCD Board requires cutting the tie wraps that bundle the LCD cables to cable mounts positioned along the rear panel. Cut the tie wraps at the cable mounts that the two LCD cables pass through. 5. Remove the four screws that secure the LCD to the front panel bezel. 6. Lift the LCD Board up and remove it. Caution: Be sure that the LCD cables are not tangled with other cables routed along the rear panel.
Replacing the LCD Board 1. Place the LCD Board in position face down onto the front panel bezel. 2. Install the four screws that secure it to the front panel bezel. 3. Connect the stranded wire cable to J405 on the Engine Board. 4. Connect the flat ribbon cable to J406 on the Engine Board. Be sure to install the cable locking clip. 5. Position the LCD cables at the cable mounts on the rear panel and install new tie wraps through the cable mounts to bundle the cables. Caution: Be sure that you have bundled the LCD cables with the other cables positioned at the cable mounts. 6. Follow the procedure on page 4-8 to install the right enclosure support wall.
Removing the Polyphony Expansion Board (PCX-1) The Polyphony Expansion Board is mounted on to the Engine Board and held in place with four nylon PC board standoffs and a 24-pin female header on the underside of the board. 1. Follow the procedure described on page 4-8 to remove the left enclosure support wall. 2. Squeeze the top of one of the four nylon PC board standoffs, and lift the corner of the board until it clears that standoff. Repeat for the other three standoffs. 3. When the board is free of the standoffs, lift the board straight up to disconnect the 24-pin connector from the Engine Board.
4-13
PC2/PC2X Disassembly/Assembly Top Enclosure
Replacing the Polyphony Expansion Board (PCX-1) 1. Place the PCX-1 Board over the four standoffs. This should properly position the 24-pin connector over the 24-pin header on the Engine Board. 2. Press the PCX-1 Board down, securing the 24-pin connector, and snapping the board onto the standoffs. Note: If you are installing a new PCX-1 Board, check the old board for Sound ROM options. If the unit has Sound ROM options, be sure to install them on the new board. 3. Follow the procedure described on page 4-8 to install the left enclosure support wall.
Removing the Slider Board 1. Follow the procedure described on page 4-8 to remove the left enclosure support wall. 2. If the unit you are servicing has a PCX-1 Board installed, follow the procedure on page 4-13 to remove it. 3. The flat ribbon cables connected to J101 and J102 use wire trap connectors. The shielding has been removed from the end of these cables to expose the wires. The wires are inserted directly into these connectors. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Slider Board. 4. Two of the screws that secure the left enclosure support wall also secure the front panel edge of the Slider Board. You have already removed the enclosure support wall, but one screw remains securing this edge of the board. See Figure 4-9, and remove the remaining screw. PC board clamp and screws
J101
J102
Front panel edge screw
Figure 4-9
Slider Board, screw locations
5. Remove the two screws that secure the PC board clamp and rear panel edge of the Slider Board to the top enclosure. 6. Remove the Slider Board. The slider knobs, slider bezels, and switch button caps should remain in place.
4-14
PC2/PC2X Disassembly/Assembly Top Enclosure
Caution: Each switch button cap uses a set of small pegs to mount the cap to the Slider Board. The button caps are mounted individually or in clusters. If a cap becomes separated from the board, be careful that a peg is not inadvertently broken.
Replacing the Slider Board 1. Position the Slider Board onto the top enclosure. Raise the top enclosure up slightly to verify that the slider knobs and switch button caps are correctly positioned through their openings in the top enclosure. 2. Align the center screw hole on front panel edge with the thread marks in the extrusion and install the screw that secures the front panel edge of the Slider Board. See Figure 4-9. 3. Place the PC board clamp in position. Align the center screw holes of the PC board clamp with the thread marks in the extrusion and install the two screws that secure the PC board clamp. 4. Connect the wire trap flat ribbon cables in the following order. Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the seven-wire flat ribbon cable from the Connector Board into the wire trap connector at J101 on the Slider Board. Insert the eight-wire flat ribbon cable from the Front Panel Board into the wire trap connector at J102 on the Slider Board. 5. If the unit you are servicing has a PCX-1 Board, follow the procedure on page 4-13 to install it. 6. Follow the procedure on page 4-8 to install the left enclosure support wall.
Removing the Engine Board 1. Follow the procedure described on page 4-8 to remove the left enclosure support wall. 2. If the unit you are servicing has a PCX-1 Board installed, remove it following the procedure described on page 4-13. 3. Following Steps 4–6, disconnect the cables listed in Table 4-4.
4-15
PC2/PC2X Disassembly/Assembly Top Enclosure
Ref.
Name
Cable Type
Destination
J402
PC2 PWR
stranded wire
Connector Board
J403
MIDI & CPU
flat ribbon
Connector Board
J405
Backlight
stranded wire
LCD Board
J406
LCD
flat ribbon
LCD Board
J412
PC2 Audio Out
flat ribbon
Connector Board
Table 4-4
Engine Board cables
4. The flat ribbon cables connected to J403 and J412 use wire trap connectors. The shielding has been removed from the end of these cables to expose the wires. The wires are inserted directly into these connectors. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Engine Board. 5. Disconnect the stranded wire cables from J402 and J405. 6. Remove the cable locking clip and disconnect the flat ribbon cable from J406. Be sure to set the cable locking clip safely aside so that you can install it when you reconnect the cable. 7. Two of the screws that secure the left enclosure support wall also secure the front panel edge of the Engine Board. You have already removed the enclosure support wall, but one screw remains securing this edge of the board. See Figure 4-10, and remove the remaining screw. PC board clamp and screws
J406
J405
J402
J412
J403
Front panel edge screw
Figure 4-10
Engine Board, screw locations
8. Remove the two screws that secure the PC board clamp and rear panel edge of the Engine Board to the top enclosure. 9. Remove the Engine Board.
4-16
PC2/PC2X Disassembly/Assembly Top Enclosure
Replacing the Engine Board 1. Place the Engine Board in position on the top enclosure. 2. Align the center screw hole on the front panel edge with the thread marks in the extrusion and install the screw that secures the front panel edge. See Figure 4-10. 3. Place the PC board clamp in position. Align the center screw holes of the PC board clamp with the thread marks in the extrusion and install the two screws that secure the PC board clamp. 4. Connect the flat ribbon cable from the LCD to J406 on the Engine Board. Be sure to install the cable locking clip. 5. Connect the stranded wire cable from the LCD to J405 on the Engine Board. 6. Connect the stranded wire cable from the Connector Board to J402 on the Engine Board. 7. Connect the wire trap flat ribbon cables in the following order. Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the ten-wire flat ribbon cable from the Connector Board into the wire trap connector at J403 on the Engine Board. Insert the five-wire flat ribbon cable from the Connector Board into the wire trap connector at J412 on the Engine Board. 8. If the unit you are servicing has a PCX-1 Board, follow the procedure on page 4-13 to install it. 9. Follow the procedure on page 4-8 to install the left enclosure support wall.
Removing the Mod Wheel Assembly 1. Refer to Figure 4-11 on page 4-19. Slide the left side of the unit forward off of your work surface so that you can access the four screws and washers securing the assembly to the bottom enclosure. Remove the four screws and washers. 2. Slide the unit back onto your work surface. 3. Lift the Mod Wheel Assembly up, approximately two inches. Nylon reinforced tape secures the Aftertouch flex cable(s) to the bottom enclosure. Peel back the tape from one side and disconnect the cable(s). Note: If you are servicing a PC2, one flat flex cable attaches to the Mod Wheel Assembly, location J202. If you are servicing a PC2X, two flat flex cables attach to the Mod Wheel Assembly, locations J202 and J203.
4-17
PC2/PC2X Disassembly/Assembly Top Enclosure
4. The flat ribbon cables connected to the two boards on the Mod Wheel Assembly use wire trap connectors. The shielding has been removed from the end of these cables to expose the wires. The wires are inserted directly into these connectors. From the Mod Wheel Assembly, disconnect the flat ribbon cable from J201 on the Wheels Board. This cable connects to J308 on the Connector Board. From the Mod Wheel Assembly, disconnect the flat ribbon cable from J701 on the IBBB Board. This cable connects to J601 on the Front Panel Board. Lift up the sides of each connector. This unlocks the trap to free the cable wires. Gently pull each cable up out of the connector. Note the marking (red or black) on each cable that indicates the connection to Pin 1; you’ll need to reconnect the marked edge of the cable to Pin 1 when you replace the Mod Wheel Assembly. 5. Remove the Mod Wheel Assembly.
Replacing the Mod Wheel Assembly 1. Hold the Mod Wheel Assembly in position over the bottom enclosure. 2. Connect the wire trap flat ribbon cables in the following order. Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you match it correctly with Pin 1 on the board. Make certain that the wires are straight prior to inserting them into the connector and that each wire is correctly inserted into its respective position. Note: Be sure the sides of the connector are lifted. Insert the flat ribbon cables into the wire trap connectors and push down the sides of each connector to lock the cable into the connector. Gently pull each cable to verify that it is locked into its connector. Insert the six-wire flat ribbon cable from the Connector Board into the wire trap connector at J201 on the Wheels Board. Insert the five-wire flat ribbon cable from the Front Panel Board into the wire trap connector at J701 on the IBBB Board. 3. Connect the flat flex cable(s). Note: If you are servicing a PC2, connect the flat flex cable to location J202 on the Mod Wheel Assembly. If you are servicing a PC2X, connect the two flat flex cables to locations J202 and J203 on the Mod Wheel Assembly. 4. Reapply the nylon reinforced tape to the flat flex cable(s). 5. Lower the Mod Wheel Assembly into position. 6. Slide the unit forward and install the four screws and washers to secure the Mod Wheel Assembly to the bottom enclosure.
4-18
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
PC2 Keyboard Assembly This section describes the removal and replacement of the PC2 (76-note) Keyboard Assembly. See page 4-26 for the corresponding procedures for the PC2X (88-note) Keyboard Assembly.
Removing the PC2 Keyboard Assembly The following procedure assumes that the PC2 is open and that you have followed the instructions on page 4-4 to remove the top enclosure. The PC2 keyboard is mounted onto a wooden spacer and is secured to the wooden spacer with 16 screws. The Keyboard Assembly refers to the keyboard and the wooden spacer. The assembly is secured to the bottom enclosure with eight screws. Note: The following steps describe the procedure to remove the keyboard from the PC2 and the wooden spacer to gain access to the keys, contacts, contact boards, and key weights. If you need to gain access to the keys only (i.e. key replacement), you can do so by following the procedure described on page 4-21, Disconnecting the PC2 Keyboard. 1. Refer to Figure 4-11. This illustration shows the locations of the keyboard and keyboard wooden spacer screws. Both sets of screws are accessible from the bottom enclosure.
keyboard front screws Keyboard
front wooden spacer screws rear
Access panel
Rear panel keyboard rear screws
Figure 4-11
PC2 76-note keyboard bottom
2. Tilt the PC2 up and remove the four keyboard rear screws, then lay the PC2 flat on your work surface. 3. Move the PC2 forward so that the front hangs over the edge of your work surface, giving you access to the remaining screws. 4. Remove the four keyboard front screws. 5. Remove the four Mod Wheel screws and washers. At this point the keyboard is loose in the bottom enclosure, but it has cables connected to the Mod Wheel Assembly, the Connector Board, and the Front Panel Board. 6. Slide the PC2 back onto your work surface.
4-19
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
7. Lift the Mod Wheel Assembly and disconnect the Aftertouch flex cable. This cable has nylon reinforced tape securing it to the bottom enclosure. Peel back the tape from one side to free the cable. 8. Place the Mod Wheel Assembly in its position on the bottom enclosure. 9. Remove the cable locking clips and disconnect the flat ribbon cables from locations J306 (Treble) and J307 (Bass) on the Connector Board. These cables are also secured to the bottom enclosure with nylon reinforced tape. Peel back the tape from one side to free the cables. 10. Remove the Keyboard Assembly. 11. The keyboard is mounted onto a wooden spacer. Sixteen screws secure the spacer to the keyboard. 12. Lay the Keyboard Assembly upside down on a flat protected surface and remove the 16 screws and remove the spacer. You can now access the components of the Keyboard Assembly.
Replacing the PC2 Keyboard Assembly Note: If you have disconnected the Bass and Treble ends of the flat ribbon cables from the keyboard contact boards during service, be sure that you have reconnected them and reapplied the tape to secure the connectors. 1. Place the keyboard upside down on a flat protected surface and position the wooden spacer over the keyboard. Install the 16 screws that secure the wooden spacer to the keyboard. 2. Place the Keyboard Assembly on the bottom enclosure. Be sure that the flat ribbon cables from the keyboard are correctly positioned. 3. Connect the flat ribbon cables to the Connector Board and reapply the cable locking clips. Be sure to reapply the nylon reinforced tape that secures the flat ribbon cable to the bottom enclosure. 4. Lift the Mod Wheel Assembly and connect the Aftertouch flex cable. Be sure to reapply the nylon reinforced tape that secures the flex cable to the bottom enclosure. Place the Mod Wheel Assembly in its position on the bottom enclosure. 5. Move the PC2 forward so that the front hangs over the edge of your work surface, and install the four keyboard front screws. 6. Install the four Mod Wheel Assembly screws and washers. 7. Slide the PC2 back onto your work surface. 8. Tilt the PC2 up and install the four keyboard rear screws.
4-20
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
Disconnecting the PC2 Keyboard Follow this procedure if you are merely replacing one or more keys. 1. Refer to Figure 4-11. 2. Tilt the PC2 up and remove the four keyboard rear screws, then lay the PC2 flat on your work surface. 3. Move the PC2 forward so that the front hangs over the edge of your work surface, giving you access to the remaining screws. 4. Remove the four keyboard front screws. Caution: The keyboard Aftertouch flex cable from the keyboard is connected to the Mod Wheel Assembly and is secured to the bottom enclosure with reinforced tape. When following the instructions below, be certain that you only slightly lift or move the Keyboard Assembly to avoid damage to the flex cable. 5. The 16 screws that secure the keyboard to the wooden spacer rest in holes provided for them on the bottom enclosure. To move the keyboard, lift the keyboard up slightly to free the 16 screws from their positions on the bottom enclosure. 6. Lift the keyboard up and move it approximately one inch to the right (as viewed standing at the keyboard). 7. You can now move the keyboard back approximately one inch toward the rear so that you can remove keys for replacement. See page 4-22 for the procedure to remove and replace keys.
Connecting the Keyboard 1. Position the keyboard so that the 16 screws that secure the wooden spacer to the keyboard are resting in the holes provided for them on the bottom enclosure. Caution: Be certain that the Aftertouch flex cable is correctly positioned and that the nylon reinforced tape securing it to the bottom enclosure is still properly applied. 2. Refer to Figure 4-11. 3. Move the PC2 forward so that the front hangs over the edge of your work surface, and install the four keyboard front screws. 4. Slide the PC2 back onto your work surface. 5. Tilt the PC2 up and install the four keyboard rear screws.
4-21
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
Removing Keys The following procedure assumes you have removed the top enclosure from the PC2. 1. Follow the procedure for removing the keyboard (page 4-19) or disconnecting the keyboard (page 4-21). 2. The following diagrams illustrate the outlines of the natural and sharp keys and the locations and functions of the components described in the following procedures.
Natural/White Key Pivot location
Key spring location
Strikes the front and rear key contact on key depression Mounts through the keyboard chassis
Figure 4-12
Natural/White key, 76-note keyboard
Pivot location
Key spring location
Strikes the front and rear key contact on key depression
Figure 4-13
4-22
Sharp/Black key, 76-note keyboard
Mounts through the keyboard chassis
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
Natural/White Keys 1. Each key has a spring located at the rear of the key. Using needle-nose pliers, slightly pull up the top portion of the spring to release it from the key. Caution: Be careful not to pull up too much, which could damage the spring. 2. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small flat screwdriver at the back end of the pivot and press toward the front edge of the keyboard. While doing so, lift the back end of the key (where the spring was positioned).
Use needle-nose pliers to pull up the top portion of the spring.
Pivot - After the spring is removed, insert a small flat screwdriver here to remove the key.
Spring Keyboard chassis section
Figure 4-14
Key spring location, 76-note keyboard
3. The key should now be free of the pivot. Remove the screwdriver. 4. Lift the key up slightly, then forward. You should be able to feel when the key is free of the pivot. A portion of the key hooks onto the keyboard chassis (see Figure 4-12). Lifting the back end of the key forward unhooks the key from the keyboard chassis.
Sharp/Black Keys 1. To remove a sharp key, first remove the adjacent natural keys, as described in the previous procedure. 2. Each key has a spring located at the rear of the key. Using needle-nose pliers, slightly pull up the top portion of the spring to release from the key. Caution: Be careful not to pull up too much, which could damage the spring. 3. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small flat screwdriver at the back end of the pivot and press toward the front edge of the keyboard. While doing so, lift the back end of the key (where the spring was positioned). 4. The key should now be free of the pivot. Remove the screwdriver. 5. Lift the key up slightly, then forward. You should be able to feel when the key is free of the pivot. A portion of the key hooks onto the keyboard chassis (see Figure 4-13). Lifting the back end of the key forward unhooks the key from the keyboard chassis.
4-23
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
Replacing a Key The following instructions apply to both natural and sharp keys. Note: Always replace a sharp key before replacing the adjacent natural keys. 1. Place the key on the keyboard chassis and lower the key into position. 2. Align the pivot with the hole at the rear of the key. Push down on the key. It should snap into position on the pivot. 3. Install the spring.
Servicing the Keyboard Contact Boards Follow the procedure on page 4-19 to remove the Keyboard Assembly. 1. Place the keyboard upside down on a flat soft surface. Be sure that the keys are resting on a soft surface to avoid scratching or other damage. The Treble and Bass Contact Boards are now visible.
Removing the Treble Contact Board 1. Peel back the nylon tape securing the connector, and disconnect the flat ribbon cable from the Treble Contact Board. 2. Remove the 24 screws that secure the Treble Contact Board to the keyboard chassis, and remove the Treble Contact Board.
Replacing the Treble Contact Board 1. Position the Treble Contact Board on the keyboard chassis. Be sure that the rubber key contacts line up properly through the holes in the keyboard chassis. 2. Install the 24 screws that secure the board to the keyboard chassis. 3. Connect the treble end of the flat ribbon cable and reapply the nylon tape to the connector.
Removing the Bass Contact Board 1. Peel back the nylon tape securing the connector, and disconnect the flat ribbon cable from the Bass Contact Board. 2. Remove the 18 screws that secure the board to the keyboard chassis, and remove the Bass Contact Board.
Replacing the Bass Contact Board 1. Position the Bass Contact Board on the keyboard chassis. Be sure that the rubber key contacts line up properly through the holes in the keyboard chassis. 2. Install the 18 screws that secure the board to the keyboard chassis. 3. Connect the bass end of the flat ribbon cable and reapply the nylon tape to the connector.
4-24
PC2/PC2X Disassembly/Assembly PC2 Keyboard Assembly
Removing the Keyboard Contact Strips 1. Place the keyboard upside down on a flat soft surface. Be sure that the keys are resting on a soft surface to avoid scratching or other damage. 2. Follow the procedure for removing the Bass and Treble Keyboard Contact Boards on page 4-24. 3. Examine the keyboard contact strips and look at the design of an individual contact. The top portion of the contact has two indentations. One indentation is deeper than the other. When replacing the keyboard contact strips, the deeper indentation is always positioned toward the rear of the key. 4. The keyboard contact strips have mounting pegs that secure the contact strips to the keyboard contact boards. 5. To remove a keyboard contact strip, gently lift and free the strip from its position. Be careful not to rip or damage any contact in the process. Pivot location Front of key
Key spring location
Strikes the front and rear key contact on key depression
PC board
Key contacts (side view)
Mounting pegs Key contacts (top view)
Deeper contact to back
Figure 4-15
Side view of the natural/white key, 76-note keyboard
Replacing the Keyboard Contact Strips 1. Position the contact strip on the keyboard contact board. Note: Be sure that the deeper indentation is positioned toward the rear of the key. 2. Line up the contact strip mounting pegs with their respective mounting holes on the keyboard contact board. 3. Using a small blunt-end tool (Q-Tip, toothpick, etc.), gently push the mounting pegs through the holes. Do not use too much force or use a tool that can poke a hole through the mounting pegs. However, be sure that the mounting pegs are installed through the holes.
4-25
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
PC2X Keyboard Assembly Removing the PC2X Keyboard Assembly The following procedure assumes that the PC2X is open and that you have followed the instructions to remove the top enclosure. 1. The keyboard is secured to the bottom enclosure using ten screws. Refer to Figure 4-16 for the position of the screws. Arrows identify the locations of the ten screws. 2. Tilt the PC2X up and remove the five keyboard rear screws, then lay the PC2X flat on your work surface. 3. Move the PC2X forward so that the front hangs over the edge of your work surface to access the remaining screws, and remove the five keyboard front screws. 4. Remove the four Mod Wheel screws and washers. At this point the keyboard is loose in the bottom enclosure, but it has cables connected to the Mod Wheel Assembly and the Connector Board.
Keyboard Keyboard front screws
Keyboard rear screws
Access panel
Mod Wheel screws
Figure 4-16
Rear panel
PC2X 88-note keyboard bottom
5. Slide the PC2X back onto your work surface. 6. Lift the Mod Wheel Assembly and disconnect the Aftertouch flex cables. These cables have nylon reinforced tape securing them to the bottom enclosure. Peel back the tape from one side to free the cables. 7. Place the Mod Wheel Assembly in its position on the bottom enclosure. 8. Remove the cable locking clips and disconnect the flat ribbon cables from locations J306 and J307 on the Connector Board. These cables are also secured to the bottom enclosure with nylon reinforced tape. Peel back the tape from one side to free the cables. Note: If you are merely replacing one or more keys, it is not necessary to entirely remove the Keyboard Assembly from the PC2X. Follow the procedure on page 4-27. 9. Remove the Keyboard Assembly.
4-26
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Replacing the PC2X Keyboard Assembly 1. Place the keyboard on the bottom enclosure. Be sure that the flat ribbon cables from the keyboard are correctly positioned to connect them to the Connector Board. Note: If you have disconnected the Bass and Treble ends of the flat ribbon cables from the keyboard contact boards during service, be sure that you have reconnected them and secured them with tape. Be sure that the small ribbon cable connecting the Bass and Treble Contact Boards is connected. 2. Connect the flat ribbon cables to J306 and J307 on the Connector Board and reapply the cable locking clips. 3. Secure the flat ribbon cables to the bottom enclosure. Be sure to reapply the nylon reinforced tape that secures the cables to the bottom enclosure. 4. Lift the Mod Wheel Assembly and connect the Aftertouch flex cables. Be sure to reapply the nylon reinforced tape that secures the flex cables to the bottom enclosure. 5. Slide the PC2X forward so that you can install the five keyboard front screws. 6. Install the four Mod Wheel Assembly screws and washers. 7. Slide the PC2X back on to your work surface. 8. Tilt the PC2X up and install the five keyboard rear screws.
Removing Keys The following procedure assumes you have removed the top enclosure from the PC2X. 1. Follow the procedure for removing the keyboard. Note: If you are merely replacing one or more keys, it is not necessary to entirely remove the keyboard from the PC2X. Once the keyboard is loose, you can slide it toward the rear panel to give you enough access to remove keys. 2. The following diagrams illustrate the outlines of the natural and sharp keys and the location and functions of the components described in the following procedures.
4-27
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Natural/White Key Pivot location
Key spring location
Hooks under the front of the keyboard chassis
Strikes the front and rear key contact on key depression Mounts through the keyboard chassis
Figure 4-17
Natural/white key, 88-note keyboard
Pivot location
Key spring location
Hooks under the front of the keyboard chassis
Strikes the front and rear key contact on key depression Mounts through the keyboard chassis
Figure 4-18
Sharp/black key, 88-note keyboard
Natural/White Keys 1. Remove the silver key spring located at the rear of the key. You will notice that the bottom of the spring is secured to the keyboard chassis by a hook. You can remove the spring by inserting a dowel (3mm diameter) into the spring, and pushing down on it slightly. Then pull the top of the dowel toward the front of the keyboard. This will unhook the spring from the keyboard chassis.
4-28
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Insert the screwdriver here Insert a 3mm dia. dowel into the spring and push down slightly. Then move the top of the dowel toward the front of the keyboard to remove the spring from the hook. Pivot
Keyboard chassis section
Hook
Figure 4-19
Key spring
2. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small flat screwdriver at the back end of the pivot and press toward the front edge of the keyboard. While doing so, lift the back end of the key (where the spring was positioned). 3. The key should now be free of the pivot. Remove the screwdriver. 4. Lift the key up slightly, then forward. You should be able to feel when the key is free of the pivot. The front edge of each key hooks under the keyboard chassis. Be sure the key is not hooked under the keyboard chassis prior to lifting the key off.
Sharp/Black Keys 1. To remove a sharp key, first remove the adjacent natural keys, as described in the previous procedure. 2. Remove the gold key spring located at the rear of the sharp key. You will notice that the bottom of the spring is secured to the keyboard chassis by a hook. Refer to Figure 4-19. You can remove the spring by inserting a dowel (3mm diameter) into the spring, and pushing down on it slightly. Then pull the top of the dowel toward the front of the keyboard. This will unhook the spring from the keyboard chassis. 3. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small flat screwdriver at the bottom of the pivot and press toward the front edge of the keyboard. While doing so, lift the back end of the key (where the spring was positioned). 4. The key should now be free of the pivot. Remove the screwdriver. 5. Lift the key up slightly, then forward. You should be able to feel when the key is free of the pivot. The front edge of each key hooks under the keyboard chassis. Be sure the key is not hooked under the keyboard chassis prior to lifting the key completely off.
4-29
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Replacing a Key 1. The following instructions apply to both natural and sharp keys. Note: Always replace a sharp key before replacing the adjacent natural keys. 2. Hook the front end of the key under the keyboard chassis. 3. Check that the mounting peg is correctly positioned. 4. Lower the key into position. Align the pivot with the hole at the rear of the key. 5. Push down on the key. It should snap into position onto the pivot. 6. Install the spring.
Servicing the Keyboard Contact Boards 1. Place the keyboard upside down on a flat soft surface. Be sure that the keys are resting on a soft surface to avoid scratching or other damage. The Treble and Bass Contact Boards are now visible.
Removing the Treble Contact Board 1. Disconnect the flat ribbon cable that connects the Treble Contact Board to the Connector Board. The connector is secured with tape. Peel back the tape to free the cable. 2. Disconnect the small ribbon cable that connects the Treble and Bass Contact Boards. 3. Remove the 26 screws that secure the Treble Contact Board to the keyboard chassis, and remove the Treble Contact Board.
Replacing the Treble Contact Board 1. Position the Treble Contact Board on the keyboard chassis. Be sure that the rubber key contacts line up properly through the holes in the keyboard chassis. 2. Install the 26 screws that secure the board to the keyboard chassis. 3. Connect the small ribbon cable that connects the Treble to the Bass Contact Board. 4. Connect the flat ribbon cable that connects the Treble Contact Board to the Connector Board. Be sure to reapply the tape to secure the connector.
Removing the Bass Contact Board 1. Disconnect the flat ribbon cable that connects the Bass Contact Board to the Connector Board. The connector is secured with tape. Peel back the tape to free the cable. 2. Disconnect the small ribbon cable that connects the Bass and Treble Contact Boards. 3. Remove the 22 screws that secure the board to the keyboard chassis, and remove the Bass Contact Board.
4-30
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Replacing the Bass Contact Board 1. Position the Bass Contact Board on the keyboard chassis. Be sure that the rubber key contacts line up properly through the holes in the keyboard chassis. 2. Install the 22 screws that secure the board to the keyboard chassis. 3. Connect the small ribbon cable that connects the Bass to the Treble Contact Board. 4. Connect the flat ribbon cable that connects the Bass Contact Board to the Connector Board. Be sure to reapply the tape to secure the connector.
Removing the Keyboard Contact Strips 1. Place the keyboard upside down on a flat soft surface. Be sure that the keys are resting on a soft surface to avoid scratching or other damage. 2. Follow the procedure to remove the Bass and Treble Keyboard Contact Boards. 3. Examine the keyboard contact strips and look at the design of an individual contact. The top portion of the contact has two indentations. One indentation is deeper than the other. When replacing the keyboard contact strips, the deeper indentation is always positioned toward the rear of the key. 4. The keyboard contact strips have mounting pegs that secure the contact strips to the keyboard contact boards. 5. To remove a keyboard contact strip, gently lift and free the strip from its position. Be careful not to rip or damage any contact in the process.
Pivot location Front of key
Strikes the front and rear key contact on key depression
Key spring location PC board
Key contacts (side view)
Mounting pegs Key contacts (top view)
Deeper contact to back
Figure 4-20
Side view of the natural/white key, 88-note keyboard
4-31
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Replacing the Keyboard Contact Strips 1. Position the contact strip on the Keyboard Contact Board that you are servicing. Note: Be sure that the deeper indentation is positioned toward the rear of the key. 2. Line up the contact strip mounting pegs with their respective mounting holes on the keyboard contact board. 3. Using a small blunt-end tool (Q-Tip, toothpick, etc.), gently push the mounting pegs through the holes. Do not use too much force or use a tool that can poke a hole through the mounting pegs. However, be sure that the mounting pegs are installed through the holes.
Removing a Key Weight 1. The main components of the weighted-key action consist of the following: the 88 keys, two rods, 88 key weights, and support brackets for the key weights and rods. There are seven 12-position brackets and one 4-position bracket. Note: Key weights are attached to one of the two rods that span the length of the keyboard. The first rod is referred to as the bass rod and the second rod is referred to as the treble rod. The first rod (the bass rod) begins at low A and extends to G# above Middle C. The second rod (the treble rod) begins at A above Middle C and extends to High C. 2. To replace a key weight, identify the section with the broken key weight and remove all the keys from that section. The key weights, rods, and support brackets are now visible. 3. There is a locking clip at each end of the keyboard. To remove the locking clips, use a standard screwdriver to pry the locking clips off. 4. Pry the rod up from the support bracket. The key weights remain attached to the rod. 5. To remove the key weights from the rod, move the key weight side to side and pull it away from the rod. The key weight should easily pop off the rod. Note: The natural and sharp key weights are physically different. The sharp key weights are smaller. When you remove multiple key weights, do so in a way that you will be able to place the new natural and sharp key weights in their correct positions.
Natural/White key weight
Figure 4-21
Sharp key weight
Natural/White and Sharp/Black key weights
6. Remove the broken key weight(s) and inspect the other key weights for reliability.
4-32
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
Replacing a Key Weight 1. Each key weight has a strip of red felt attached with pliable adhesive. Be sure the red felt extends onto the upper surface of the top of the key weight. 2. Place the key weight in position against the rod and snap it onto the rod with slight pressure. Note: Be sure to place the sharp key weights in the correct positions. 3. Place the rod and key weights into position over the support brackets and snap the rod into the support brackets. Be certain that the rod is pressed securely into the support brackets. 4. Prior to replacing the keys, check that each key weight moves freely. To do this, position a screwdriver at the back end of the key weight (on the red felt), press down and remove the screwdriver. The key weight should move up and down freely. 5. Install the keys and key springs.
4-33
PC2/PC2X Disassembly/Assembly PC2X Keyboard Assembly
4-34
Chapter 5 Troubleshooting Introduction Cables, Connectors Flat Ribbon Cables All flat ribbon cables with connectors are keyed, and therefore cannot be reversed. Most flat ribbon cables have locking cable clips. Be sure to reapply the clips when connecting cables. Flat ribbon cables that connect to picoflex connectors do not have locking cable clips. Some flat ribbon cables have exposed wires that insert directly into a wire trap connector. When disconnecting and connecting these cables, you must look for the marking on the edge of the cable denoting Pin 1 and be sure that you match it correctly with Pin 1 on the board.
Cable Routing In some cases, tape secures cable connections or fastens cables to the bottom enclosure. Always peel back the tape from one side when disconnecting cables so that the tape remains properly positioned.
Surface-Mount Devices The removal and replacement of surface-mount devices requires training and the proper equipment. If you do not have the training or equipment to remove or replace surface-mount devices, contact the service department to order a board replacement. International service technicians should contact their appropriate Young Chang Distributor.
Saving User Data 1. Set up a MIDI recording device. 2. Connect the a MIDI cable to the MIDI Out port of the PC2 to the MIDI In port on the external device. 3. Press the Global button on the PC2. Press the Right cursor button until the LCD displays Dump all Objects?
4. Begin recording on the MIDI recording device. 5. Press Enter on the PC2. The LCD shows the objects being saved. When all objects are saved, Dump all Objects? will appear in the LCD. 6. To reload the saved objects, connect a MIDI cable from the MIDI Out port of the recording device to the PC2’s MIDI In port. 7. From the external device, begin the playback of the file.
Troubleshooting Boot Block
Boot Block Use the PC2’s Boot Loader to enter Diagnostics or perform a Hard Reset to the unit. You can also install operating system updates and ROM objects into Flash ROM.
Entering the Boot Block Apply power to the unit. When the Please wait... message appears in the LCD, quickly press and release the Panic button for PC2 keyboard units or Edit button for PC2R rack units. The LCD displays the main menu of the Boot Loader and the first available option. Use the Left or Right cursor button to advance to the next option. The menu options are as follows: Install Engine—Installs new operating system software upgrades. Install ROM option—Loads Sound ROM presets after installing a Sound ROM option. Update boot block—Installs boot block updates. Run diagnostics—Enters the diagnostic test menu. For a complete list of tests and the procedure to execute the diagnostic tests, refer to Chapter 2, Diagnostics. Run engine—Exits the boot block and returns the unit to normal operation. Hard RESET—Clears the memory to factory default settings.
Resets Hard Reset There are two ways to perform a Hard Reset to the PC2. 1. Press the Global button and press the Right cursor button to step through the Global parameters to Reset PC2? and press the Enter/Yes button. The LCD displays an Are you sure? message. Press the Enter/Yes button to continue or the Cancel/No. 2. Enter the Boot Loader and press either the Left or Right cursor button to scroll through the menu. Press Enter to select Hard Reset. The LCD displays an Erase RAM objects? message. Press the Right button to execute the hard reset. Press the Left button to cancel.
Soft Reset The Soft Reset does not erase user programs and setups and is equivalent to turning the power off and on. To Soft Reset a PC2R, simultaneously press the FX, MIDI Receive and Global buttons. To Soft Reset a PC2, simultaneously press the +/-, 0 and Clear buttons.
5-2
Troubleshooting Software Updates
Software Updates A computer with a MIDI interface and sequencer is necessary to transfer software to your PC2 units MIDI Sysex.
File Formats Software upgrades are stored as standard MIDI files. Filenames are in the format PC2XVV.MID, where X is the software block and VVV is the version number (V.VV). The following lists the possible values for X. Never install files with names that don’t conform to this format; it won’t work. bk—boot block for keyboard models br—boot block for rack models bp—boot block for Polyphone Expansion (PCX-1) option (keyboard and rack units) k—operating system software for keyboard models r—operating system software for rack models p—operating system for Polyphony Expansion (PCX-1) option (keyboard and rack models) s—soundware data for keyboard and rack models sp—soundware data for Polyphony Expansion (PCX-1) option (keyboard and rack models)
Installing the Operating System or Setups Warning: This procedure requires performing a hard reset. All user programs and setups will be erased. Before continuing, be sure to save all user programs and setups. 1. Connect a MIDI cable from the MIDI Out port of the computer interface or sequencer to the MIDI In port on the PC2. 2. Open the first .MID file using the sequencer program. 3. Turn on the PC2 and follow the procedure to enter the Boot Block. 4. Press the Enter button to select Install engine. 5. Press the Enter button to select via MIDI. 6. The LCD shows Waiting for MIDI. Start playing the MIDI file from the sequencer. While a file is loading, the bottom line of the display shows the progress. If the display continues to show Waiting for MIDI after starting the sequencer, stop and restart the sequence. 7. After the file is loaded, the display will show done. 8. If you have additional files to load, open the file from the sequencer and begin playing it. 9. Press the Cancel button twice to return to the main menu. Scroll to Hard Reset and select Yes.
5-3
Troubleshooting Software Updates
Installing a New Boot Block Warning: This procedure performs a hard reset. All user programs and setups will be erased. Before continuing, be sure to save all user programs and setups. 1. Connect a MIDI cable from the MIDI Out port of the computer interface or sequencer to the MIDI In port on the PC2. 2. Using the sequencer program, open the first .MID file. 3. Turn on the PC2 and follow the procedure to enter the Boot Block. 4. Press the Enter button to select Update boot
block.
5. Press the Enter button to select via MIDI. 6. The LCD shows Waiting for MIDI. Start playing the MIDI file from the sequencer. While a file is loading, the bottom line of the display shows the progress. If the display continues to show Waiting for MIDI after starting the sequencer, stop and restart the sequence. 7. After the file is loaded, the unit will reset.
Installing Sound ROM Options After installing a Sound ROM option, the presets need to be transferred into Flash ROM. Warning: This procedure requires performing a hard reset. All user programs and setups will be erased. Before continuing, be sure to save all user programs and setups. 1. Turn on the PC2 and follow the procedure to enter the Boot Block. 2. Use the Left or Right cursor button to scroll to Install ROM Enter button.
option,
and press the
3. Use the Left or Right cursor button to select the appropriate option for the card you are installing, card 1 or card 2. 4. Press the Enter button. The LCD indicates Flash ROM.
Installing
as the presets transfer into
Note: If you are installing a second ROM option repeat Steps 3 and 4. 5. Use the Left or Right cursor button to scroll to Hard Reset, and press the Enter button. 6. Select Yes to hard reset the unit. The unit now has the additional ROM option setups installed.
5-4
Troubleshooting Replacing the Battery
Replacing the Battery The PC2 uses a flat three volt Lithium coincell battery. When the battery voltage runs low, the unit boots up with a low battery message. Note: The battery voltage can be checked at anytime using the Scanner Diagnostics. See page 5-7 for more information.
PC2 Keyboard Models Accessing the Battery 1. Place the PC2 upside down on a flat protected surface. 2. Remove the seven screws that secure the access panel and set it safely aside. 3. If the unit has Sound ROM options installed, remove them.
Removing the Battery The battery (CR2032) in the PC2 keyboard is mounted into a holder on the Engine Board and is accessible when the access panel is removed. 1. Insert a flat plastic tool (plastic knife, pen cap, etc.) into one of the openings between the battery and the holder to lift the battery.
Insert the tool here to lift the battery.
CR2032
Insert the tool between the holder and the battery to ease the battery out of the holder.
Figure 5-1
Battery and holder
2. Ease the battery out of the holder. If necessary, insert the plastic tool at the bottom of the holder (closest to the Engine Board) to remove the battery.
Installing the Battery 1. Position the battery over the holder so that the positive terminal is pointing to the Engine Board. 2. Slide the battery into the holder and apply slight pressure until it snaps into place. 3. If the unit has Sound ROM options, install them. 4. Install the seven screws to secure the access panel.
5-5
Troubleshooting Replacing the Battery
PC2R Rack Models Accessing the Battery 1. Remove the seven screws that secure the top cover. 2. Slide the top cover back from the Front Panel Assembly to release the top cover from the bottom enclosure, and place the top cover safely aside to avoid damage. 3. If the unit has Sound ROM options installed, remove them.
Removing the Battery The battery (CR2032) in the PC2 keyboard is mounted into a holder on the Engine Board and is accessible when the access panel is removed. 1. Refer to Figure 5-1. Insert a flat plastic tool (plastic knife, pen cap, etc.) into one of the openings between the battery and the holder to lift the battery. 2. Ease the battery out of the holder. If necessary, insert the plastic tool at the bottom of the holder (closest to the Engine Board) to remove the battery.
Installing the Battery 1. Position the battery over the holder so that the positive terminal is pointing to the Engine Board. 2. Slide the battery into the holder and apply slight pressure until it snaps into place. 3. If the unit has Sound ROM options, install them. 4. Place the top cover in position and slide it toward the Front Panel Assembly. 5. Install the seven screws that secure the top cover.
5-6
Troubleshooting Scanner Tests
Scanner Tests PC2R Rack Models The Scanner Tests for the PC2R rack model include separate tests for the front panel buttons and LEDs, rotary potentiometers including Knobs A–D and Volume, and the Alpha Wheel. To enter the Scanner Tests, first turn on the PC2R. Once the PC2R is on and ready to play, simultaneously hold down the three buttons located in the top row of the Modes section (Internal Voices, KB3 and MIDI Setups). All front panel LEDs will light in a sequence and the LCD will display the following:
SCAN1.3 B=3.0 W=128 VOL SLIDER = 255 Figure 5-2
LCD example, PC2R scanner tests
The first line of the display shows the scanner software version, the battery voltage and the current value for the Mod Wheel position. Disregard the Mod Wheel value; it is applicable only to keyboard units. The second line shows the results of the current test. Figure 5-2 shows the result of the volume potentiometer test. To exit the Scanner Tests and return to normal operation, simultaneously press the Cancel and Enter buttons.
Front Panel Buttons To test a button, press any front panel button. An example of the expected test result for the Solo button follows: BUTTON Solo
Alpha Wheel To test the Alpha Wheel, turn it to increase or decrease the value by one. The expected test result when the Alpha Wheel is turned is one of four values–0, 1, 2, or 3: SPINKNOB = 3
Front Panel Knobs To test Knobs A–D or the Volume potentiometer, turn a knob to check its value at the bottom (zero, far left) and at the top (far right). An example of the normal test results for the Knob A follows (your results may vary slightly): At zero (far left): SLIDER 1 = 0 At top (far right): SLIDER 1
=
255
5-7
Troubleshooting Scanner Tests
PC2 Keyboard Models The Scanner Tests for the PC2 keyboard models include separate tests for the front panel buttons and LEDs, front panel sliders including the Master Volume slider, the Alpha Wheel, the Mod and Pitch wheels, the keyboard, and the pedals. To enter the Scanner Tests, first turn on the PC2. Once the PC2 is on and ready to play, simultaneously hold down the 4, 5 and 6 buttons. All front panel LEDs will flash and the LCD will display the following:
SCAN1.3 B=2.9 W=128 KEY C4 60 C4 60 Figure 5-3
LCD example, PC2 scanner tests
The first line of the display shows the scanner software version, as well as the battery voltage and the current value for the Mod Wheel position. The second line shows the results of the current test. Figure 5-3 shows the result of a key test—in this case striking the key C4 on the keyboard. To exit the Scanner Tests and return to normal operation, simultaneously press the Cancel and Enter buttons.
Front Panel Buttons To test a button, press any front panel button. An example of the expected test result for the Solo button follows: BUTTON Solo
Alpha Wheel To test the Alpha Wheel, turn it to increase or decrease the value by one. The expected test result when the Alpha Wheel is turned is one of four values–0, 1, 2, or 3: SPINKNOB = 3
Front Panel Sliders To test the front panel sliders, move a slider to check its value at the bottom, center, and top. An example of the normal test results for the Slider A follows (your results may vary slightly): At bottom: SLIDER 1 At center: SLIDER 1 At top: SLIDER 1
5-8
= =
=
0 128
255
Troubleshooting Scanner Tests
Wheels To test the pitch and mod wheels, move the wheel up and down. An example of the expected test results for the pitch wheel follows (your results may vary slightly): At bottom: PITCH WHEEL At center: PITCH WHEEL At top: PITCH WHEEL
= =
=
0 128
255
Keyboard To test the keyboard, press any key. The key name and number will be displayed twice in the LCD. The first set of name and number is the test result for the front key contact switch and the second is for the rear switch. An example of the expected test result for the Middle C key follows: KEY C4
60
C4
60
Pressing harder the display will change and show the pressure value. PRESSURE
=
255
Switch Pedals 1, 2, and 3 To test a switch pedal, press the pedal. An example of the expected test result for the switch pedal 1 follows: Full depression: PEDAL
1
Continuous Pedals 1 and 2 To test the continuous control pedal, press the pedal. An example of the expected test result for the continuous control pedal follows: No depression: CTRL PEDAL Full depression: CTRL PEDAL
= =
255 0
5-9
Troubleshooting Power Problems
Power Problems Dead 1. Before opening the unit, verify the following: •
The AC outlet is supplying power.
•
The AC adapter is properly connected to the unit.
2. Check the power switch, power jack and AC adapter. 3. Refer to the Interconnect Diagram. See page 5-13 for rack models or page 5-14 for keyboard models. Check all related connections. 4. Refer to the Connector Board schematics and check all supply voltages.
Audio Problems No Audio Note: If you are diagnosing a PC2R rack unit, you can check for audio without having a controller connected. Connect a pair of headphones, turn the power on. When the unit is on and ready to play, simultaneously press the MIDI Receive and Global buttons to play one of the stored demos. Flashing LEDs in the Performance section indicate the locations of the stored demos. Select one to play to check the audio. Press the Cancel button to exit. 1. Run the Scanner Diagnostics to check the volume slider operation. 2. Refer to the Interconnect Diagram. See page 5-13 for rack models or page 5-14 for keyboard models. 3. Check the flat ribbon cable from J412 on the Engine Board to J302 on the Connector Board. 4. Check the solder connections at the connectors. 5. Refer to the Engine Board schematics and check the signal activity on the DAC, U23. 6. Trace the signal path.
5-10
Troubleshooting Front Panel Problems
Front Panel Problems LCD not lit 1. Check the LCD contrast potentiometer. Turn the pot to see if there is any change. Note: If you are servicing a PC2R rack unit, the LCD Contrast is located on the front panel. If you are servicing a PC2 keyboard, it is located on the rear panel. 2. Check the stranded wire cable from the LCD Board to J405 on the Engine Board. Disconnect and reseat the cable. 3. Check the flat ribbon cable from the LCD Board to J406 on the Engine Board. Disconnect and reseat the cable. 4. Check the solder connections on the LCD and Engine Boards. 5. Refer to the Engine Board schematics and check the signal path.
Buttons, Sliders or Controllers not working 1. Run the Scanner Tests. Note: If you are servicing a PC2R rack unit, simultaneously press the Internal Voices, KB3 and MIDI Setups buttons located in the top row of the Modes section. If you are servicing a PC2 keyboard, simultaneously press the 4, 5 and 6 buttons. 2. Refer to the Interconnect Diagram. See page 5-13 for rack models or page 5-14 for keyboard models. 3. Check all related cables. 4. Disconnect and reseat the cables. 5. Check the solder connections at the connectors. 6. Check front panel ribbon cable(s). 7. Refer to the Connector Board schematics and check U1, IC Scanner 37451, for signal activity.
5-11
Troubleshooting Keyboard Problems
Keyboard Problems Dead Keyboard 1. Check the flat ribbon cables connecting the keyboard Bass and Treble Contact Boards to the Connector Board, locations J306 and J307. Be certain that the cables are not loose or damaged. 2. Disconnect and reseat the cables. 3. Refer to the Connector Board schematics. 4. Check U1, IC Scanner 37451 on the Connector Board for keyboard signals. 5. Trace signal path. 6. Find and replace bad component(s) or order a board replacement.
Dead Note(s) One or More in a Section 1. Remove related contact board. 2. Check contact strip for dirt, damage or wearing. Clean dirty contacts with denatured alcohol. Replace damaged or worn contact strip. 3. Install contact strip. 4. If section is still dead, remove strip and check contact board for shorts, cold solder joints, etc. 5. Find and replace bad component(s) or order replacement board.
Mechanical Noise 1. Check keyboard for broken key weights, support brackets, or ripped contacts.
5-12
Troubleshooting PC2R Interconnect Diagram
PC2R Interconnect Diagram
Left Front Panel Board J604 FP Bridge 2
Right Front Panel Board
J603 FP Bridge
J602 FP Bridge
J601 Front Panel
Hp/Vol/Pwr Sw Board J3 FP Bridge 2
Connector Board J322 Vol/Pwr/Hp
J301 PC2 Power
J303 MIDI & CPU
J304 Front Panel
J302 Power In
LCD
Engine Board
J408 128 Chnl Opt
J2 Vol/Pwr/Hp
J406 LCD
J402 J405 PC2 PWR Backlight
J412 Audio Out
J410, Expansion Sound ROM 1 J409, Expansion Sound ROM 0
J404, EPROM Board
J403 MIDI & CPU
5-13
Troubleshooting PC2 Interconnect Diagram
PC2 Interconnect Diagram Button Board
Front Panel Board
J701
J601 IBBB
Slider Board
J101 Slider
J604 Front Panel J602 FP Bridge
J102 FP Bridge
LCD
Engine Board
J406 LCD
128 Chnl Opt
J408
J402 PC2 PWR J405 Backlight
J412 Audio Out
J410, Expansion Sound ROM 1 J409, Expansion Sound ROM 0 J403 MIDI & CPU
J404, EPROM Board
Connector Board
J301 PC2 Power
J303 MIDI & CPU
J308 Wheels
J302 Audio
J306 Treble
J307 Bass
J304 Front Panel
J204 Pitch
J205 Mod
J203
Wheels Board J202
J201
88-note keyboards only
Wheels
5-14
J305 Slider
Chapter 6 Parts Lists Introduction The parts lists included in this chapter cover all models of the PC2 series. Some printed circuit boards and assemblies are used in more than one model. Therefore, the parts lists on the following pages are listed under these headings: PC2R/PC2/PC2X
All Models
PC2/PC2X
Keyboard Models
PC2R
Rack Model
The following two tables list the printed circuit boards and assemblies by model. Note: The PC2 and PC2X have been combined as these two models share most printed circuit boards and assemblies in common. The exceptions are the parts lists for the Final and Keyboard Assemblies.
PC2/PC2X Printed Circuit Boards and Assemblies Part No.
Description
Page
N012000150
Final Assembly, PC2
page 6-9
N012000151
Final Assembly, PC2X
page 6-11
N012103800
LCD Board
page 6-8
N012300051
Engine Board
page 6-3
N012300053
Pitch & Mod Wheel Assembly
page 6-8
N012300061
Connector Board
page 6-6
N012400051
Slider Board
page 6-9
N012400052
Front Panel Board
page 6-5
N215040311
Keyboard TP-8R AFT 76 Note
page 6-10
N215040413
Keyboard TP-10MDF AFT 88 Note
page 6-12
Parts Lists Introduction
PC2R Printed Circuit Boards and Assemblies Part No.
6-2
Description
Page
N012000153
Final Assembly
page 6-16
N012103802
LCD Board
page 6-15
N012300040
Connector Board
page 6-13
N012300051
Engine Board
page 6-3
N012300070
Front Panel Assembly
page 6-14
N012300080
Left Front Panel Board
page 6-14
N012300090
Right Front Panel Board
page 6-15
N012700019
Headphone/Volume/Power Switch Board
page 6-15
Parts Lists PC2R/PC2/PC2X
PC2R/PC2/PC2X Engine Board, N012300051 Part No.
Description
Qty.
Reference Designation
N035040201
BATTERY HOLDER TOSHIBA (BV-32) PC-88
1
J411
N041010401
SHUNTS JUMPER 2mm DIGI-KEY SPE1302-ND
1
@JP1
N041021264
SOCKET SIMM 22.5D TIN 64P LEFT METAL
2
J409, 410
N041025308
HEADER .156” SP 8P (09-65-2088)
1
J402
N041030040
HEADER 2mm SQR 3P R/A SAMTEC
1
JP1
N041030124
HEADER DUAL 2.0mm 24P MOLEX 87089-2416
1
J408
N041030150
HEADER DUAL 0.1" SQR 50POS DIGIKEY
1
J404
N041031210
CONN .1" SP DUAL ROW 14P (057-014-153)
1
J406
N041032305
CONN WIRE TRAP 2.00mmSP 5P (52147-0510)
1
J412
N041032310
CONN WIRE TRAP 2.00mmSP 10P (52147-1010)
1
J403
N041034002
HEADER .098" SP 2P (22-03-5025)
1
J405
N042005422
JUMPER WIRE 2.5MM
1
JP2 PINS 1 & 2
N051102103
RELAY 5V DPDT (G6H-2-DC5)
2
RY1-2
N064003502
IC LINEAR +5V LM78M05 500mA TO-220
1
VR1
N051064004
RES TF 47Ω 5% 1/16W 0603 T&R
4
R1, 26, 27, 39
N051064010
RES TF 100Ω 5% 1/16W 0603 T&R
1
R38
N051064011
RES TF 110Ω 5% 1/16W 0603 T&R
1
R28
N051064015
RES TF 1.5KΩ 5% 1/16W 0603
2
R64, 65
N051064025
RES TF 330Ω 5% 1/16W 0603
1
R32
N051064100
RES TF 1KΩ 5% 1/16W 0603 T&R
4
R5, 8, 34, 68
N051064109
RES TF 1MΩ 5% 1/16W 0603 T&R
2
N051064110
RES TF 10KΩ 5% 1/16W 0603 T&R
10
N051064130
RES TF 1.3KΩ 5% 1/16W 0603 T&R
1
R4
N051064220
RES TF 2.2KΩ 5% 1/16W 0603 T&
2
R6, 9
N051064470
RES TF 4.7KΩ 5% 1/16W 0603 T&R
3
R2, 10, 30
N051064472
RES TF 470Ω 5% 1/16W 0603
2
R31, 33
N051064820
RES TF 820Ω 5% 1/16W 0603
1
R3
N051066124
RES TF 1.24KΩ 1% 1/16W 0603
4
R60, 61, 66, 67
N051066453
RES TF 453Ω 1% 1/16W 0603
4
R56, 57, 62, 63
N051066464
RES TF 464Ω 1% 1/16W 0603
4
R48-51
N051066475
RES TF 475Ω 1% 1/16W 0603
4
R52-55
N051066487
RES TF 487Ω 1% 1/16W 0603
4
R40-43
N051066499
RES TF 499Ω 1% 1/16W 0603
4
R44-47
N051100010
RES NET QUAD ISO 10KΩ 5% 1/16W
N051100047
RES NET QUAD ISO 47Ω 5% 1/16W
9
RP13-21
N051101701
RES TF 36Ω 5% 1/8W 1206
1
R35
N051101706
RES CF 47Ω 5% 1/8W 1206
1
R70
N051130082
RES TF 8.2Ω 5% 1/4W 1210
1
R13
N051130220
RES TF 220Ω 5% 1/4W 1210
2
R19, 21
N051130330
RES TF 330Ω 5% 1/4W 1210
2
R20, 22
N052007006
CAP CER NPO 6.8PF 50V 5% 1206
2
C11, 13
11
R15, 16 R7, 14, 17-18, 23-25, 29, 36-37
RP1-4, 6-12
6-3
Parts Lists PC2R/PC2/PC2X
Part No.
Description
Qty.
Reference Designation
N052007406
CAP CER N90 2200PF 50V 5% 1206
4
N052007503
CAP CER X7R 0.1UF 50V 10% 1206
46
N052007809
CAP CER NPO 100PF 50V 5% 0603
1
N052007833
CAP CER NPO 33PF 50V 5% 0603
4
C9, 10, 12, 14
N052080010
CAP CER NPO 1000PF 50V 5% 0805
2
C2, 7
N052900747
CAP ELE GP 47UF 35V SZE SMT
5
C48-51, 68
N052901610
CAP ELECT GP 10UF 16V 20% SZB SMT
8
C39, 44-46, 64-67
N052901622
CAP ELCCT GP 220UF 10V 20% SZE SMT
1
C3
N052902522
CAP ELECT GP 22UF 35V 20% SZD SMT
1
C40
N053000703
DIODE RECT GP SMT 1A S1A SMA 1N4001 1206
1
D5
N053000802
DIODE SWITCH 1N4148 SMT DL-35
2
D2, 3
N054000102
TRANSISTOR KST3904 SOT-23
1
Q1
N054000802
TRANSISTOR MMBT2222L SOT-23
1
Q2
N054002906
TRANSISTOR MMBT2907L SOT-23
2
Q3, 4
N055001505
IND FE BD 2.5-TURN SMT
2
L1, 2
N055001509
IND FE BD SMT 200mA 600Ω 100MHZ 0805
2
R11, 12
N059010060
XTL 20.0000MHz +/-50PPM FND PAR 18PF SMT
1
Y1
N059010061
XTL 24.576MHz +/-50PPM FND FAR 18PF SMT
1
Y2
N061000802
IC LOGIC FAIRCHILD (TI) SN74AHCIGO8DBVR
3
U3, 4, 18
N061000912
IC LOGIC INV TINY UHS UNBUF SOT23-5
2
U12, 13
N061007139
IC LOGIC 74VHC139 SOP16
1
U10
N061007144
IC LOGIC 74VHC14 SOP14-150
1
U1
N061011008
IC LOGIC 74AC08 SOP14-150
2
U6, 14
N061011245
IC LOGIC 74HC245 SOP20
1
U8
N062004905
IC IF UART ST16C550 W/FIFO'S PLCC 44P
1
U22
N062004913
IC IF DAC AK4393VF DL 24B DS +5VS VSOP28
1
U23
N062005525
IC MEM FLSH ROM 1MX16 70nS SSOP56-525 5V
1
U5
N062005704
IC GAL 16V8A-15QJ SMT PLCC20
1
U21
N062100410
IC MEM SRAM 256kX16 55nS TSOP44-400 LO\ PWR
1
U7
N062100416
IC MEMORY DRAM 1MX16 70nS(max) SOJ42
2
U16, 17
N064003508
IC ANA OPAMP DL BIP LO-NOIS NE5532A
4
U24-27
N083016001
IC MASKROM PC2 BASE HI 830160-001
1
U19
N083016101
IC MASKROM PC2 BASE LO 830161-001
1
U20
N252007456
CAP CER NPO 5600PF 50V 5% 1206
8
C52-59
N253000702
DIODE SHTKY SIG 5NS LO-C SL BAS40 SOT-23
2
D1, 4
N262001301
IC MC 68331CPV25 MOTOROLA
1
U2
N266000412
IC CUSTOM MABEL-2
2
U9, 11
N266000801
IC LISA VY06514 PLCC84
1
U15
N035040105
BATTERY COINCELL 3V 195mah CR2032 TOSHIBA
1
6-4
C71, 72, 75, 76 C5, 615-38, 41-43, 47, 60-63, 69, 70, 73, 74, 77-81, 86, 87, 91 C1
Parts Lists PC2/PC2X
PC2/PC2X Front Panel Board, N012400052 Part No.
Description
Qty.
Reference Designation
N032009401
FRONT PANEL PCB SUPPORT BRACKET PC-88
N035026011
BUTTON SM W/LED (3GANG)
1 5
N035026012
BUTTON SM W/LED RED PC2/X
1
N035026101
BUTTON LG W/LED PC-88
N035026141
BUTTON LG W/LED (1,2,3,4) PC2/X
N035026142
BUTTON LG W/LED (5,6,7,8) PC2/X
1
N035026143
BUTTON LG W/LED (9,10,11,12) PC2/X
1
N035026144
BUTTON LG W/LED (13,14,15,16) PC2/X
1
N035026145
BUTTON LG NO LED(3) (1,2,3) PC2/X
1
N035026146
BUTTON LG NO LED(3) (4,5,6) PC2/X
1
N035026147
BUTTON LG NO LED(3) (7,8,9) PC2/X
1
N035026148
BUTTON LG NO LED(3) (+/-,0,CLEAR)
1
N035026149
BUTTON LG NO LED(1) (CANCEL) PC2/X
1
N035026150
BUTTON LG NO LED(1) (ENTER) PC2/X
1
N035026151
BUTTON LG W/LED (SOLO) PC2/X
1
N035026152
BUTTON LG W/LED (EQ) PC2/X
1
N035026153
BUTTON LG W/LED (SW1) PC2/X
1
N035026154
BUTTON LG W/LED (SW2) PC2/X
1
N035026155
BUTTON LG W/LED (SW3) PC2/X
1
N035026156
BUTTON LG W/LED (SW4) PC2/X
1
N035026157
BUTTON LG W/LED (SW5) PC2/X
1
N035026217
BUTTON LG NO LED
6
N035026611
LCD SUPPORT BEZEL
1
N035026711
SPIN KNOB BEZEL
1
N041031220
HEADER .1” SP DUAL ROW 20P
1
J604
N041032205
CONN WIRE TRAP 2.00mmSP 5P R/A
1
J701
N041032305
CONN WIRE TRAP 2.00mmSP 5P R/A
1
J601
N041032308
CONN WIRE TRAP 2.00mmSP 8P
1
J602
N043003703
SWITCH TACT SPST 6mmX6mm 160GF
N044010501
ENCODER 36 STEP 2BIT
N045010111
LED T1 RED HI EFF DIFFUSED LTL-422
N045010612
LED MINI GREEN DIFUSSED T1
N051005010
RES CF 1Ω 5% 1/8W
1
R8
N051100102
RES CF 15Ω 5% 1/8W
7
R1-7
13 1
72 1 49 3
S1-72 SP1 D1-7, 9-12, 14-16, 20-24, 26-29, 32, 34-38, 40, 42-44, 48, 50-53, 55-60, 63, 66-69 D33, 41, 49
6-5
Parts Lists PC2/PC2X
Part No.
Description
Qty.
Reference Designation
N051100157
RES CF 10KΩ 5% 1/8W
18
R9-26
N052001204
CAP CER MONO Z5U .1UF 50V 20% .3AX
3
C2-4
N054000801
TRANSISTOR PN2222 TO-92
7
Q1-7
N054001201
TRANSISTOR PNP KTA1271(KSA643CY) TO-9
N061000301
IC LOGIC 74LS145 DIP16-300
1
U2
N061014001
IC LOGIC 74HC541 DIP20
1
U1
N061020501
IC LOGIC 74HC373 DIP20
1
U3
N252003102
CAP ELECT ECE-BOJU471 470UF 6.3V VERT AX
2
C1, 6
10
Q8-17
Connector Board, N012300061 Part No.
Description
Qty.
Reference Designation
RES TF 7.5KΩ 5% 1/8W 1206
1
N025224508
TAPPING SCREW-2 BH 3.5X8 WHITE W/WASHER
3
R19
N025323308
MACHINE SCREW BH M3X8 BLK
1
N032038811
BRACKET SUPPORT I/O PCB PC2/X
1
N032038816
BRACKET SUPPORT POWER JACK PC2/X
1
N032064801
EXTRUSION HEAT TRANSFER
1
N041006503
CONN PWR JACK 4P W/SHIELD UNITOP
1
J321
N041021903
JACK PHONE RCA TYPE TA PCMT
1
J300
N041025308
HEADER .156” SP 8P (09-65-2088)
1
J301
N041030033
MODULAR JACK 6P R/A AMP 555163-1
1
J316
N041030310
CONN MIDI JACK 3-GANG YKF 51-5041(JALCO)
1
J320
N041031220
HEADER .1” SP DUAL ROW 20P (057-020-153)
3
J304, 306, 307
N041032305
CONN WIRE TRAP 2.00mmSP 5P (52147-0510)
1
J302
N041032306
CONN WIRE TRAP 2.00mmSP 6P (52147-0610)
1
J308
N041032307
CONN WIRE TRAP 2.00mmSP 7P (52147-0710)
1
J305
N041032310
CONN WIRE TRAP 2.00mmSP 10P (52147-1010)
1
J303
N041034401
PHONE JACK MONO 1/4” RA49C-12A MONO
3
J317-319
N041034411
CONN STEREO 1/8” W/SWITCH UNITOP
1
J315
N041034501
PHONE JACK STEREO 1/4” RA49C-14B
5
J310-314
N043003702
SWITCH POWER DPDT NKK M2022TXW30-DA
1
S2
N043010510
SWITCH SLIDER R/A 2.5mmSP SPDT
1
S1
N051064005
RES TF 56Ω 5% 1/16W 0603
4
R93, 96, 99, 102
N051064011
RES TF 110Ω 5% 1/16W 0603
12
N051064015
RES TF 1.5KΩ 5% 1/16W 0603
1
N051064022
RES TF 220Ω 5% 1/16W 0603
4
N051064110
RES TF 10KΩ 5% 1/16W 0603
21
R17, 20, 65, 68, 69, 73-75, 94, 95, 97, 98 R22 R100, 101, 126, 128 R1-3, 9, 10, 12-14, 24, 70, 77, 84-86, 108, 109, 121, 144, 146, 147, 149
N051064150
RES TF 150Ω 5% 1/16W 0603
1
R81
N051064470
RES TF 470Ω 5% 1/16W 0603
1
R118
N051100010
RES NET QUAD ISO 10KΩ 5% 1/16W 3.2mmX1.6mm
5
RP9-13
N051100011
RES NET QUAD ISO 100Ω 5% 1/16W
8
RP1-8
N051101706
RES CF 47Ω 5% 1/8W 1206
2
R134, 137
N051101708
RES TF 56Ω 5% 1/8W 1206
2
R4, 5
6-6
Parts Lists PC2/PC2X
Part No.
Description
Qty.
Reference Designation
N051101721
RES CF 270Ω 5% 1/8W 1206
2
R6, 83
N051101724
RES 470 5% 1/8W 1206
2
R18, 117
N051101730
RES CF 1.0KΩ 5% 1/8W 1206
3
R87, 120, 148
N051101734
RES TF 1.5KΩ 5% 1/8W 1206
1
R82
N051101738
RES CF 2.2KΩ 5% 1/8W 1206
2
R8, 66
N051101760
RES CF 20KΩ 5% 1/8W 1206
1
R80
N051101768
RES TF 680KΩ 5% 1/8W 1206
3
R76, 78, 79
N051101780
RES CF 100KΩ 5% 1/8W 1206
7
R7, 15, 88-91, 150
N051101783
RES TF 200KΩ 5% 1/8W 1206
1
R145
N051101790
RES CF 1.0MΩ 5% 1/8W 1206
5
R11, 16, 71, 72, 119
N051101794
RES CF 1.5MΩ 5% 1/8W 1206
1
R63
N051102302
POT R/A 10K 12RV03 (JUNG POONG)
1
R107
N051103073
RES CF 165KΩ 1% 1/8W 1206
1
R64
N051103121
RES TF 121KΩ 1% 1/8W 1206
1
R67
N051103151
RES TF 15.00KΩ 1% 1/8W 1206
8
R122, 123, 132, 133, 135, 136, 138, 142
N051120030
RES TF 3.0KΩ 5% 1/8W 1206
3
R106, 127, 129
N051125201
RES TF 200Ω 1% 1/4W 1210
4
R124, 130, 139, 141
N052001223
CAP CER MONO 0.22UF 50V 20% AX
1
C39
N052001712
CAP ELECT 1000UF 25V RAD
1
C30
N052002412
CAP ELECT 470UF 25V 20% .2SP
1
C31
N052007401
CAP CER NPO 100PF 50V 5% 1206
2
C46, 55
N052007503
CAP CER X7R 0.1UF 50V 10% 1206
21
C12, 13, 23, 24, 29, 32, 33, 35, 38, 41, 42, 44, 45, 48-54, 56
N052007810
CAP CER X7R 1000PF 50V 10% 0603
21
C1-3, 6, 8-11, 14-22, 25-27, 47
N052007833
CAP CER NPO 33PF 50V 5% 0603
2
N052901601
CAP ELECT GP 100UF 16V 20% SZC SMT
4
C28, 34, 36, 37
N052901602
CAP ELECT GP 0.197” SP RAD 1000UF 16V 20%
1
C40
N052901610
CAP ELECT GP 10UF 16V 20% SZB SMT
1
C7
N053000703
DIODE RECT GP SMT 1A S1A SMA 1N4001 1206
N053000802
DIODE SWITCH 1N4148 SMT DL-35
14
N054000802
TRANSISTOR MMBT2222L SOT-23
4
Q2, 7, 9, 18
N054002906
TRANSISTOR MMBT2907L SOT-23
6
Q1, 3, 4, 8, 12, 13
N054010301
TRANSISTOR NPN KSC2331-Y
2
Q14, 15
N055001505
IND FE BD 2.5-TURN SMT
2
L3, 4
N055001509
IND FE BD SMT 200mA 600Ω 100MHz 0805
2
L1, 2
N059010010
XTL 12.2880MHz +/-50PPM FND PAR 18PF SMT
1
Y1
N061010302
IC LOGIC 74HCU04 SOP14
1
U5
N061014002
IC LOGIC 74HC4051 SOP16-200
1
U11
N061014003
IC LOGIC MC74HC541DW SOP-20
1
U2
N063002302
IC OPT COUPLER PC410
1
U7
N064001602
IC LINEAR OPAMP TL072 SOP8-160
1
U3
N064003508
IC ANA OPAMP DL BIP LO-NOIS NE5532A
1
U9
N064010031
IC COMPARATOR QUAD LM339 SOIC14/14W
1
U4
N064010804
IC LINEAR -12V LM79L12 SOP8
1
VR3
N064010805
IC LINEAR +5V KA78T05 5V 3A TO-220
1
VR1
N064010806
IC LINEAR +12V LM78M12 TO-220
1
VR2
N215000105
SCHOTT TRANSFORMER 67129600
1
L5
N262100608
IC MICROCONTROLLER M37451M8-731FP
1
U1
5
C4, 5
D12, 14, 15, 17, 22 D1-11, 13, 16, 21
6-7
Parts Lists PC2/PC2X
LCD Board, N012103800 Part No.
Description
Qty.
N013040112
CABLE ENGINE TO LCD 14P RIBBON
N013042601
CABLE ENGINE TO LCD BACKLIGHT 2P PC2/X
1
N045010302
LCD UC-20212BLANO SAMSUNG PC-88/MX
1
Reference Designation
1
Pitch & Mod Wheel Assembly, N012300053 Part No.
Description
Qty.
Reference Designation
N013040122
CABLE POT TO WHEEL BD 3P #26 AWG 4
2
N041030007
HEADER 0.1” SP 4P (22-03-2041)
2
J202, 203
N041032306
CONN WIRE TRAP 2.00mmSP 6P (52147-0610)
1
J201
N051100118
RES CF 220Ω 5% 1/8W
2
R18, 19
N051100132
RES CF 1KΩ 5% 1/8W
1
R17
N051100310
RES MF 1KΩ 1% 1/8W
1
R12
N051100316
RES MF 1.5KΩ 1% 1/8W
1
R13
N051100336
RES MF 4.99KΩ 1% 1/8W
2
R16, 20
N051100354
RES MF 10KΩ 1% 1/8W
2
R9, 10
N051100379
RES 110K 1/8W 1%
2
R6, 7
N051100439
RES MF 30.1KΩ 1% 1/8W
3
R4, 5, 8
N051100850
RES MF 2.49KΩ 1% 1/8W
1
R11
N051101401
RES POT 100K 3/4 TURN
2
R14, 15
N051101410
RES TRIMPOT 50K 3/4 TURN
1
R3
N051102301
POT ROTARY 10K (K2000)
2
R1, 2
N052001204
CAP CER MONO Z5U .1UF 50V 20% .3AX
6
C1-6
N064001903
IC LINEAR OPAMP TLC2272CP DIP8
3
U1-3
N025223410
TAPPING SCREW-2 BH 3X10 BLK
1
N025224414
TAPPING SCREW-2 BH 3X14 BLK
2
N031053800
BRACKET MOUNTING PITCH & MOD WHEEL PC2
1
N032021811
BUSHING 8.0X26 K2000
1
N032021911
SPRING TORSION MUSIC WIRE
1
N035020311
PITCH & MOD WHEEL 35
2
N035027013
PITCH & MOD WHEEL CHEEK
1
6-8
Parts Lists PC2
Slider Board, N012400051 Part No.
Description
Qty.
Reference Designation
N035026158
BUTTON LG W/LED (ZONE1,3,4) PC2
4
N035026321
SLIDER KNOB PC-88
5
N035026411
SLIDER BEZEL PC-88
5
N039000701
SLIDE VOLUME FELT 0.3TX12X70
5
N041032307
CONN WIRE TRAP 2.00mmSP 7P (52147-0710)
1
J101
N041032308
CONN WIRE TRAP 2.00mmSP 8P (52147-0810)
1
J102
N043003703
SW TACT SPST 6mmX6mm 160GF ALPS SKHWAC
4
S1-4
N045010610
LED MINI RED/GREEN DIFUSSED T1 DKL-30RGM
4
D1-4
N051101502
SLIDER VOLUME SINGLE 10KB-LIN 45mm
5
R1-5
N053000801
DIODE 1N4148 DO-35
4
D5-8
PC2 Final Assembly, N012000150 Part No.
Description
Qty.
E207407181
DOUBLE SIDE TAPE 3M (5MMX50M) #467
N013030951
CABLE TIE
N013041601
CABLE SLIDER TO FRONT PANEL 8P PC2/X
1
N013041701
CABLE SLIDER TO CONN BD 7P PC2/X
1
N013041801
CABLE ENGINE TO CONN BD 10P PC2/X
1
N013041901
CABLE ENGINE TO CONN BD 5P PC2/X
1
N013042001
CABLE WHEEL TO CONN BD 6P PC2/X
1
N013042101
CABLE BUTTON BD TO FRONT PANEL 5P PC2/X
1
N013042201
CABLE ENGINE TO CONN BD POWER PC2/X
1
N013042301
CABLE KEYBOARD BASS & TREBLE PC2/X
1
N013042302
CABLE KEYBOARD BASS PC2
1
N013042401
CABLE FRONT PANEL TO CONN BD PC2/X
1
N015048232
FELT 2TX20X1200 BLK KEYBOARD K2500/S
1
N022002703
SPACER PUSH LOCKING 8.0MM TALL
4
N022003714
CABLE CLAMP 14P
1
N022003720
CABLE CLAMP 20P
4
N025153512
TAPPING SCREW-1 TH 3.5X12 BLK
8
N025153520
TAPPING SCREW-1 TH 3.5X20 BLK
16
N025224508
TAPPING SCREW-2 BH 3.5X8 WHITE W/WASHER
35
N025323408
MACHINE SCREW BH M4X8 BLK
35
N025323410
MACHINE SCREW BH M4X10 BLK
4
N025323414
MACHINE SCREW BH 4X14 BLK
2
N025328310
MACHINE SCREW BH 3X10 BLK W/WASHER
4
N032033632
BOTTOM PC2
1
N032037732
LEFT SUPPORT WALL PC2/X
1
N032037822
RIGHT SUPPORT WALL PC2/X
1
Reference Designation
0.01 13
6-9
Parts Lists PC2
Part No.
Description
Qty.
N032038813
CLAMP PCB PC2/X
N032038814
BRACKET CLAMPING ENCLOSURE TOP PC2/X
2
N032038815
BRACKET LOCKING ENDCAP PC2/X
2
N032038950
SPACER (BLK)
2
N032059011
PLATE COVER PCB PC2/X
1
N035020711
KNOB ENCODER 52
1
N035026511
LCD DISPLAY LENS PC-88
1
N039004322
CABLE MOUNT BASE (DAMD-10)
9
N125223408
TAPPING SCREW-2 BH 3X8 BLK (PLASTIC)
4
N125223410
TAPPING SCREW-2 BH 3X10 AN (PLASTIC)
2
N032033521
TOP COVER PC2
1
N039040004
BUMPON 3M
4
N052001022
ADAPTER
1
N035027013
CHECK PITCH & MOD WHEEL
1
N032033713
ENDCAP LEFT
1
N032033813
ENDCAP RIGHT
N125223408
TAPPING SCREW-2 BH 3X8 BLK (PLASTIC)
N215040311
KEYBOARD TP-8R AFT STRIP 76 NOTE
Reference Designation
5
1 14
FOR ENDCAPS
1
Keyboard Assembly, N215040311 Part No.
Description PCB KEY CONTACT LOW PCB KEY CONTACT HIGH KEY CONTACT STRIP (12 NOTE) BRACKET ROD/KEY WEIGHT SUPPORT 12 PO KEY PIVOT BRACKET ROD/KEY WEIGHT SUPPORT 4 POS KEY NATURAL A KEY NATURAL B KEY NATURAL C KEY NATURAL D KEY NATURAL E KEY NATURAL F KEY NATURAL G KEY NATURAL LOW A KEY NATURAL HIGH C KEY SHARP KEY WEIGHT NATURAL KEY WEIGHT SHARP FELT RED AFTER TOUCH STRIP
6-10
Qty.
Reference Designation
Parts Lists PC2X
PC2X Final Assembly N012000151 Part No.
Description
Qty.
E207407181
DOUBLE SIDE TAPE 3M(5MMX50M)#4670.01
N013030951
CABLE TIE
N013041601
CABLE SLIDER TO FRONT PANEL 8P PC2/X
1
N013041701
CABLE SLIDER TO CONNECTOR BD 7P PC2/X
1
N013041801
CABLE ENGINE TO CONNECTOR BD 10P PC2/X
1
N013041901
CABLE ENGINE TO CONNECTOR BD 5P PC2/X
1
N013042001
CABLE WHEEL TO CONNECTOR BD 6P PC2/X
1
N013042101
CABLE BUTTON BD TO FRONT PANEL 5P PC2/X
1
N013042201
CABLE ENGINE TO CONN BD POWER PC2/X
1
N013042301
CABLE KEYBOARD BASS & TREBLE PC2/X
1
N013042303
CABLE KEYBOARD BASS PC2X
1
N013042401
CABLE FRONT PANEL TO CONNECTOR B/D PC2/X
1
N015047014
FELT (W/ ONE SIDE ADHESIVE) 1TX10X1000 BLK
2
N015048236
FELT 2TX17X1300 BLK KRYBOARD K2500X/XS/AES
1
N022002703
SPACER PUSH LOCKING 8.0MM TALL
4
N022003714
CABLE CLAMP 14P
1
N022003720
CABLE CLAMP 20P
N025224508
TAPPING SCREW-2 BH 3.5X8 WHITE W/WASHER
N025226508
TAPPING SCREW-2 BH 3.5X8 BLK W/WASHER
2
N025323312
MACHINE SCREW BH 3X12 BLK
1
N025323408
MACHINE SCREW BH M4X8 BLK
35
N025323410
MACHINE SCREW BH M4X10 BLK
4
N025323414
MACHINE SCREW BH 4X14 BLK
2
N025328310
MACHINE SCREW BH 3X10 BLK W/WASHER
4
N025328610
MACHINE SCREW BH 4X10 W/SFWASHER BLK
8
N032033633
BOTTOM PC2X
1
N032037732
LEFT SUPPORT WALL PC2/X
1
N032037822
RIGHT SUPPORT WALL PC2/X
1
N032038813
CLAMP PCB PC2/X
5
N032038814
BRACKET CLAMPING ENCLOSURE TOP PC2/X
2
N032038815
BRACKET LOCKING ENDCAP PC2/X
2
N032038950
SPACER (BLK)
2
N032059011
PLATE COVER PCB PC2/X
1
N035020711
KNOB ENCODER
1
N035026511
LCD DISPLAY LENS PC-88
1
N039004322
CABLE MOUNT BASE (DAMD-10)
9
N125223408
TAPPING SCREW-2 BH 3X8 BLK (PLASTIC)
4
N032033522
TOP COVER PC2X
1
Reference Designation
13
4 35
6-11
Parts Lists PC2X
Part No.
Description
Qty.
N039040004
BUMPON 3M
4
N052001022
ADAPTER
1
N035027013
CHECK PITCH & MOD WHEEL
1
N032033713
ENDCAP LEFT
1
N032033813
ENDCAP RIGHT
N125223408
TAPPING SCREW-2 BH 3X8 BLK (PLASTIC)
14
N125223410
TAPPING SCREW-2 BH 3X10 AN (PLASTIC)
2
N215040413
KEYBOARD TP-10MDF AFT (ABS)
1
Reference Designation
1 FOR ENDCAPS
Keyboard Assembly, N215040413 Part No.
Description PCB KEY CONTACT LOW PCB KEY CONTACT HIGH KEY CONTACT STRIP (12 NOTE) BRACKET ROD/KEY WEIGHT SUPPORT 12 POS KEY PIVOT BRACKET ROD/KEY WEIGHT SUPPORT 4 POS KEY NATURAL A KEY NATURAL B KEY NATURAL C KEY NATURAL D KEY NATURAL E KEY NATURAL F KEY NATURAL G KEY NATURAL LOW A KEY NATURAL HIGH C KEY SHARP KEY WEIGHT NATURAL KEY WEIGHT SHARP FELT RED AFTER TOUCH STRIP
6-12
Qty.
Reference Designation
Parts Lists PC2R
PC2R Connector Board, N01230004 Part No.
Description
Qty.
Reference Designation
RES TF 7.5KΩ 5% 1/8W 1206
1
R19
N041006503
CONN PWR JACK 4P W/SHIELD UNITOP
1
J321
N041021903
JACK PHONE RCA TYPE TA PCMT
1
J300
N041025308
HEADER .156" SP 8P (09-65-2088)
1
J301
N041030326
HEADER .1" SP DUAL ROW 26P (057-026-153)
1
J304
N041031104
JACK 1/4" STEREO (EPJ-BBB-P) BELTON
2
J311-312
N041032305
CONN WIRE TRAP 2.00mm SP 5P (52147-0510)
1
J302
N041032310
CONN WIRE TRAP 2.00mmSP 10P (52147-1010)
1
J303
N041034010
HEADER .098" SP 10P (22-03-5105)
1
J322
N041034031
CONN MIDI TRIPLE R/A PCMT (YKF51-5046)
1
J320
N043010510
SWITCH SLIDER R/A 2.5mmSP SPDT
1
S1
N051064005
RES TF 56Ω 5% 1/16W 0603 T&R
4
R93, 96, 99, 102
N051064011
RES TF 110Ω 5% 1/16W 0603 T&R
6
R17, 20, 94-95, 97-98
N051064016
RES TF 1.6KΩ 5% 1/16W 0603
1
R118
N051064022
RES TF 220Ω 5% 1/16W 0603
2
R100-101
N051064110
RES TF 10Ω 5% 1/16W 0603 T&R
N051100010
RES NET QUAD ISO 10KΩ 5% 1/16W
4
RP9-12
N051100011
RES NET QUAD ISO 100Ω 5% 1/16W
3
RP6-8
N051101706
RES CF 47Ω 5% 1/8W 1206
2
R134, 137
N051101708
RES CF 56Ω 5% 1/8W 1206
2
R4-5
13
R1-3, 12, 14, 24, 108-109, 121, 126, 128, 144, 147
N051101721
RES CF 270Ω 5% 1/8W 1206
1
R6
N051101724
RES 470 5% THICK FILM 1206
2
R18, 117
N051101730
RES CF 1.0KΩ 5% 1/8W 1206
2
R120, 148
N051101734
RES TF 1.5KΩ 5% 1/8W 1206
1
R22
N051101780
RES CF 100KΩ 5% 1/8W 1206
1
R15
N051101790
RES CF 1.0MΩ 5% 1/8W 1206
3
R11, 16, 119
N051102103
RELAY 5V DPDT (G6H-2-DC5)
1
RY1
N051103151
RES TF 15.00KΩ 1% 1/8W 1206
8
R122-123, 132-133, 135-136, 138, 142
N051120030
RES TF 3.0KΩ 5% 1/8W 1206
3
R106, 127, 129
N051120056
RES TF 5.6KΩ 5% 1/8W 1206
1
R8
N051125201
RES TF 200Ω 5% 1/4W 1210
4
R124, 130, 139, 141
N052001204
CAP CER MONO Z5U 0.1UF 50V 20% 3AX
3
C1-3
N052001223
CAP CER MONO 0.22UF 50V 20% AX
1
C39
N052001711
CAP ELECT 100UF 25V 20% RAD
4
C28, 34, 36, 37
N052001712
CAP ELECT 1000UF 25V RAD
1
C30
N052002412
CAP ELECT 470UF 25V 20% .2SP
1
C31
N052007401
CAP CER NPO 100PF 50V 5% 1206
2
N052007503
CAP CER X7R 0.1UF 50V 10% 1206
16
C29, 32-33, 35, 38, 41-42, 44-45, 49-54, 56
N052007810
CAP CER X7R 1000PF 50V 10% 0603
10
C17-22, 25-27, 47
N052007833
CAP CER NPO 33PF 50V 5% 0603
2
C4-5
N052901602
CAP ELECT GP 0.197" SP RAD 1000UF 16V 20%
1
C40
C46, 55
6-13
Parts Lists PC2R
Part No.
Description
Qty.
Reference Designation
N053000703
DIODE RECT GP SMT 1A S1A SMA 1N4001 1206
4
D14-15, 17, 22
N053000802
DIODE SWITCH 1N4148 SMT DL-35
2
D13, 21
N054000802
TRANSISTOR MMBT2222L SOT-23
3
Q7, 9, 18
N054002906
TRANSISTOR MMBT2907L SOT-23
4
Q4, 8, 12-13
N054010301
TRANSISTOR NPN KSC2331-Y
2
Q14-15
N055001505
IND FE BD 2.5 TURN SMT
4
L1-4
N059010010
XTL 12.2880MHz +/-50PPM FND PAR 18PF SMT
1
Y1
N061010302
IC LOGIC 74HCU04 SOP14
1
U5
N061014002
IC LOGIC 74HC4051 SOP16-200
1
U11
N063002302
IC OPT COUPLER PC410 SOP6-170
1
U7
N064003508
IC ANA OPAMP DL BIP LO-NOIS NE5532A
1
U9
N064010804
IC LINEAR -12V LM79L12 SOP8
1
VR3
N064010805
IC LINEAR +5V KA78T05 5V 3A TO-220
1
VR1
N064010806
IC LINEAR +12V LM78M12 TO-220
1
VR2
N215000105
SCHOTT TRANSFORMER 67129600
1
L5
N262100608
IC MICROCONTROLLER M37451M8-731FP
1
U1
Front Panel Assembly, N012300070 Part No.
Description
Qty.
Reference Designation
N025323306
MACHINE SCREW BH 3X6 BLK
7
BRACKET CLAMPING PCB & FRONT LEFT & RIGHT
N025383306
MACHINE SCREW FH M3X6 (SMALL)
4
FRONT PANEL & BRACKET CLAMPING PCB
N031063100
BRACKET CLAMPING PCB PC2R
1
N035033900
LCD DISPLAY LEN PC2R
1
N032027426
FRONT PANEL PC2R
1
Left Front Panel Board, N012300080 Part No.
Description
Qty.
Reference Designation
N013035412
CABLE FRONT PANEL PC2R 200mm
1
N041030036
HEADER 16P PICOFLEX MOLEX 90325-0016
1
J603
N041034002
HEADER .098" SP 2P (22-03-5025)
1
J604
N043003704
SW TACT SPST 6mmX6mm 160gf ALPS SKHHDA
6
S15-20
N045010111
LED T1 RED HI EFF DIFFUSED LTL-4221
1
D10
N045010610
LED MINI RED/GREEN DIFUSSED T1 DKL-30RGM
5
D11, 13, 15, 17, 19
N035033800
KEYCAP W/LED PC2R
6
@15-20
N051102304
POT 10K 15mmLx6mmD FLAT ELEC
4
R19-22
N035025813
POWER SWITCH VOLUME KNOB PC2R
4
@R19-22
N051101702
RES CF 15Ω 5% 1/8W 1206
2
R17, 18
N052007503
CAP CER X7R 0.1UF 50V 10% 1206
1
C7
N053000802
DIODE SWITCH 1N4148 SMT DL-35
4
D12, 14, 16, 18
N054000802
TRANSISTOR MMBT2222L SOT-23
2
Q9-10
6-14
Parts Lists PC2R
Right Front Panel Board, N012300090 Part No.
Description
N041030036
HEADER 16P PICOFLEX MOLEX 90325-0016
N041030326
HEADER .1" SP DUAL ROW 26P (057-026-153)
N043003704
SW TACT SPST 6mmX6mm 160gf ALPS SKHHDA
N045010111
Qty.
Reference Designation
1
J602
1
J601
14
S1-14
LED T1 RED HI EFF DIFFUSED LTL-4221
8
D1-8
N045010610
LED MINI RED/GREEN DIFUSSED T1 DKL-30RGM
1
D9
N051004710
POT 36STEP 2BIT GRAY
1
SP1
N051102303
POT 10K 20mmLX6mmD KNURLED ELEC
1
R1
N052002422
CAP ELECT 470UF 6.3V 3.5mm SP.11mm
2
C1-2
N035033800
KEYCAP W/LED PC2R
9
@S3-8, 10, 11, 12
N035033600
KEYCAP NO LED PC2R
5
@S1, 2, 9, 13, 14
N035034000
KNOB ENCODER PC2R
1
@SP1
N051101702
RES CF 15Ω 5% 1/8W 1206
2
R9, 10
N051101703
RES CF 1Ω 5% 1/8W 1206
1
R2
N051101757
RES CF 10KΩ 5% 1/8W 1206
12
R3-8, 11-16
N052007503
CAP CER X7R 0.1UF 50V 10% 1206
7
C3-6, 8-10
N054000802
TRANSISTOR MMBT2222L SOT-23
2
Q1, 2
N054002906
TRANSISTOR MMBT2907L SOT-23
6
Q3-8
N061000302
IC LOGIC 74LS145 SOP16
1
U1
N061014003
IC LOGIC MC74HC541DW SOP-20
1
U3
N061020502
IC 74HC373A OCTAL LATCH SOIC20
1
U2
Headphone/Volume/Power Switch Board, N012700019 Part No.
Description
Qty.
Reference Designation
N041021007
HEADPHONE JACK (HTJ-064-05) MARK-XXX
1
J1
N041034110
HEADER 10P 1 ROW .098" SP R/A
1
J2
N251102305
POT 10K LIN PUSH SW PC2R
1
R1
LCD Board, N012103802 Part No.
Description
Qty.
N013042502
CABLE ENG TO LCD 14P PC2R 330mm
N013042603
CABLE ENG TO LCD BACKLIGHT 2P PC2R
1
N245010320
LCD DISPLAY 20X2 Tinama (TM202JFF6)
1
Reference Designation
1
6-15
Parts Lists PC2R
Final Assembly, N012000153 Part No.
Description
Qty.
N013041802
CABLE ENG TO CONN BD 10P PC2R 160mm
N013042202
CABLE ENG TO CONN BD POWER PC2R 200mm
1
N032062700
FRONT PANEL
1
N039040001
BUMPON (BLACK) 3M SJ-5508
4
N052001021
ADAPTER (YCA) PC2
1
N013042801
CABLE CONN TO HEADPHONE PC2R 270mm
1
N013042901
CABLE CONN TO FRONT PANEL 26P PC2R 320mm
1
N013043001
CABLE CONN TO ENG AUDIO 5P PC2R 105mm
1
N022002703
BUTTON SUPPORT DONG-A DABS 8R
4
N025223306
TAPPING SCREW-2 BH 3X6 BLK
13
N025224508
TAPPING SCREW-2 BH 3.5X8 WHITE W/WASHER
1
N025323306
MACHINE SCREW BH 3X6 BLK
7
N025383306
MACHINE SCREW FH M3X6 (SMALL)
4
N032062301
ENCLOSURE BOTTOM PC2R
1
N032062500
ENCLOSURE TOP PC2R
1
N032064900
HEAT SINK PC2R
1
N125223408
TAPPING SCREW-2 BH 3X8 BLK (PLASTIC)
2
N039020700
PRESSURE STRIP BOTTOM EDGE PCB PC2R
1
6-16
1
Reference Designation
Chapter 7 Schematics Description
Page No.
Engine Board–Microprocessor (page 1 of 5)
page 7-3
Engine Board–Master/Slave Mabels (page 2 of 5)
page 7-4
Engine Board–Lisa F/X 128Ch Option, Clocks (page 3 of 5)
page 7-5
Engine Board–Sound ROM, Uart, Glue, Decoupling (page 4 of 5)
page 7-6
Engine Board–Audio Channel, Muting Control (page 5 of 5)
page 7-7
Front Panel and IBBB Board (keyboard models)–FP Buttons and LEDs (page 1 of 2)
page 7-8
Front Panel and IBBB Board (keyboard models)–IBBB Buttons and LEDs (page 2 of 2)
page 7-9
Connector Board (keyboard models)–Scanner (page 1 of 3)
page 7-10
Connector Board (keyboard models)–Digital Interface (page 2 of 3)
page 7-11
Connector Board (keyboard models)–Power Supply/Audio (page 3 of 3)
page 7-12
Slider Board (keyboard models)–Sliders
page 7-13
Right Front Panel Board (rack models)–FP Buttons and LEDs (page 1 of 2)
page 7-14
Left Front Panel Board (rack models)–Controllers, FP Buttons and LEDs (page 2 of 2)
page 7-15
Connector Board (rack models)–Scanner (page 1 of 3)
page 7-16
Connector Board (rack models)–Digital Interface (page 2 of 3)
page 7-17
Connector Board (rack models)–Power Supply/Audio (page 3 of 3)
page 7-18
Power/Volume/Headphone Board (rack models)
page 7-19
Chapter 7
Engine Board–Microprocessor (page 1 of 5)
VCC
VCC
1
2
1
1
1 BERR BKPT FREEZE IFETCH IPIPE
C1 100pF
PC2 POWER 2
2 1
38 37 36 35 32 31 30 29 16 15 14 13 10 9 8 7
2 1
2 1
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
CS HB LB OE WE
7 6 5 4 3
2
256KX16 SRAM GND 12 34
2 8 26 38 50
JP1 BOOT Select 2mm
VCC1 VCC2
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
1 49
48 47 46 45 44 43 42 41 40 39 37 36 35 34 33 32
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
CE WE OE HB LB
B
GND1 GND2 GND3 GND4 GND5
E 1
U4 NC7SZ08
CTXD IPIPE
81
4
FREEZE
5 3
JMP
+12V
VCC
R10 4.7K
FLASHCS
2
ERAMCS
SMT2.5T L2 1
BOOTCS
VCC GND
5 3
JMP
2
140
1 2
BERR IRQ7 IRQ6 {4-C7} IRQ5
COE RAMCS RESETDLD CWE {2-A1,3-A1,4-C6} CHB {4-C7} CLB {4-C7} U6 74AC08
IRQ4 {4-C8} IRQ3 IRQ2 IRQ1
CA[01] {2,3,4}
8 7 6 5
CWE {02,03,04}
1 2 3 4
DACMUTE {5-D1} MUTE PAI PCLK
3
2
5 4
6 74AC08 U6
RP4 10K 8 7 6 5
1 2
1 2
VCC
1 2 3 4
CWE {2,3,4} DSACK0 CS0 BOOTCS
RP2 10K 1 2 3 4
1 2
VCC GND
J406
RP3 10K
8 7 6 5
J405 2
BACKLIGHT
VCC
1 2 3 4
R13 8.2, 1/4W 1
VCC
90 CLKOUT 83 XTAL
BUVDD
R9 2.2K
11 VCC1 33 VCC2
A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
Q1 C MMBT3904 B
3 2 1
CS2 CS1 CS0
U3 NC7SZ08 VCC 1 4 GND 2
RP1 10K
8 7 6 5 4 3 2 1
1 2
BYTE PWD CE0 20 CE1 STATUS OE WE WP
6 40 39 41 17
BUVDD
R8 1K
14 PWMB 15 PWMA
J402
VCC
3 2 1
LCDCS {4-C6} UARTCS {4-B5}
VCC 11 19 25 37 47 61 72 86 89 109 121 135 144 GND 2 12 20 26 35 48 54 62 74 82 91 107 120 128 134 NC 1 16 17 18 21 27 34 36 38 53 55 59 73 88 108 123 126 129 J401 2 1 DS BERR DS 4 3 BKPT VSEE1 VCC 5 6 VCC FREEZE VSEE2 8 7 IFTECH RESET 10 9 IPIPE VCC
PWRUPRST BUVdd MUTE +12V AGND -12V 5V_DIG DGND
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
VCC 14 28 42 DGND 15 29 44
5 4 3 143 142 141
CRESET
1
RESET {2-A1,3-D1,4-D6,5-C1}
19 17 24 26 30 32 41 39 18 16 25 27 31 33 40 38 36
XJ1 (DNS) BOOT Select 0.1"
Do_Not_Install
D
55 1 7 21 22 23
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
18 19 20 21 22 23 24 25 26 27 42 43 44 1 2 3 4 5
CA[18] CA[17] CA[16] CA[15] CA[14] CA[13] CA[12] CA[11] CA[10] CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01]
56
A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
8 7 6 5
1
HALT
R7 10K
2
4 5 6
U8 74HC245
2
VCC
3
1
1
CD[00] CD[01] CD[02] CD[03] CD[04] CD[05] CD[06] CD[07]
18 17 16 15 14 13 12 11
B[1] B[2] B[3] B[4] B[5] B[6] B[7] B[8]
A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8]
PWRUPRST
DIR
G
2 3 4 5 6 7 8 9
7 8 9 10 11 12 13 14 2 1
2
MUTE {5-C1}
U1
2 1
74VHC14
R5 1K
VPP
31 30 29 28 27 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
CA[20] CA[19] CA[18] CA[17] CA[16] CA[15] CA[14] CA[13] CA[12] CA[11] CA[10] CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01]
U7
VCC
NC/A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
A
J404
1
2
CLK25 {2-A1,3-D8,5-C1}
COE
VCC
75 PQS7/TXD 77 IPIPE_L/DSO FREEZE/QUOT
VCC
C6 0.1 uF
19
DACMUTE {5-D1} MUTE ROM1PR {4-D5} ROM0PR {4-D5} OPRSNT {3-D7} VCC PCLK
R59 100
8
L4
1
C
1
PAI
CSBOOT_L
47uF 35V
FE BEAD
BKPT
80 TSC 76 RXD 78 IFETCH_L/DSI 79 BKPT_L/DSCLK 22 PAI 23 PGP7/IC4/OC5 24 PGP6/OC4 28 PGP5/OC3/OC1 29 PGP4/OC2/OC1 30 PGP3/OC1 31 PGP2/IC3 32 PGP1/IC2 33 PGP0/IC1 13 PCLK 84 VDDSYN 85 EXTAL 87 XFC
4
E {4-C6} IAK7 ASICS {2-B4}
CA[20] CA[19] CA[18] CA[17] CA[16] CA[15] CA[14] CA[13] CA[12] CA[11] CA[10] CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01] CA[00]
C5 0.1 uF
L5
2
CRXD IFETCH
2
R58 100
VCC
R2 4.7K
PQS0/MISO PQS1/MOSI FC2/CS5_L PQS2/SCK FC1/CS4_L PQS3/PCS0/SS_L FC0/CS3_L PQS4/PCS1 BGACK_L/CS2_L PQS5/PCS2 BG/CS1_L PQS6/PCS3 BR/CS0_L
+ C68
FE BEAD
1
VCC
PF7/IRQ7_L PF6/IRQ6_L PF5/IRQ5_L PF4/IRQ4_L PF3/IRQ3_L PF2/IRQ2_L PF1/IRQ1_L PF0/MODCLK
3
C7 1000PF
C
Vss Vdd VEE RS R/W E D00 D01 D02 D03 D04 D05 D06 D07 20x2 LCD
CRESET LCDCS {4-C6}
U1
+ C3
13
220uF
12
LCDE {4-C7}
RESET {2-A1,3-D1,4-D6,5-C1}
74VHC14
D1 BAS40 3 1
RESET {4-C6}
MUTE {5-C1}
U1 74VHC14 5
D6 DNS 2 1
1
6
C2 1000PF
R6 2.2K
MRXD {4-B6}
R69 DNS 1
U1 74VHC14
2
+VBAT 2
11 2 1
2 SCKO
U2
10 9 8 7 6 64 63 60 58 57 56 52 51 50 49 46 45 44 43 42 41 40 39 115
1
65 66 67 68 69 70 71
A23/CS10_L A22/CS9_L A21/CS8_L A20/CS7_L A19/CS6_L A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
CWE {2-A1,3-A1,4-C6}
2
MISO {3-D6} MOSI {3-D6}
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
103
8 9 10 11 12 13 5 4 3 2 54 53 52 43 45 46 47 48 49 50 51 37
CA[20] CA[19] CA[18] CA[17] CA[16] CA[15] CA[14] CA[13] CA[12] CA[11] CA[10] CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01]
U1 74VHC14
SMT2.5T L1 1
95 96 97 98 99 100 101 102
IRQ7 IRQ6 {4-C7} IRQ5 IRQ4 {4-C8} IRQ3 IRQ2 IRQ1
VCC
7
U5 1M/2MX16 FLASH ROM
SIZ1 {4-C6} SIZ0 {4-C6} DS
2
B
116 117 118 119 122 124 125 127 130 131 132 133 136 137 138 139
R/W
104 105 110 106 111
1
92 RESET 94 BERR 93 HALT CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
1
PE7/SIZ1 PE6/SIZ0 PE4/DS_L PE5/AS_L PE3/RMC_L
2
112 PE2/AVEC_L 113 PE1/DSACK1_L 114 PE0/DSACK0_L
1
MC68331CPV25
CRESET BERR HALT
SCK {3-C6} SS {3-C6}
6
CA[20:00] {2-A1,3-A1,4-B5}
DSACK1 {2-A1,3-A1} DSACK0
R1 47
5
BUVDD
R4 1.3K
2 1
2
A
4
CD[15:00] {2-C1,3-A1,4-C6}
2
R3 820
3
Kurzweil PC2 Series Service Manual
10
RESETDLD
MTXD {4-B7} IRQ7 IAK7 CRXD CTXD AESO {2-A8}
C4 DNS
J403 MIDI & CPU 1 MIDI_RxD 2 CONT 3 MIDI_TxD 4 IRQ 5 IACK 6 INT_RxD 7 INT_TxD 8 DIG_OUT 9 GND 10 +VBAT
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC88 II ENGINE MICROPROCESSOR Filename: P82RDV4 Eng: Mfg: Doc: 021197
~12V
3
4
5
6
D
7
Date: 9/19/2000 By: T. THOMPSON Sht 1 of 5 Rev: D V4 8
7-3
Engine Board–Master/Slave Mabels (page 2 of 5) 3
4
5
KISI {3-D8} DSACK1 {1-A1,3-A1} CWE {1-A3,C4,C5;3-A1;4-C6}
TS1 1
CA[20:00] {1-A8,3-A1,4-B5} CLK25 {1-C1,3-D8,5-C1} RESET {1-B4,D5;3-D1;4-D6;5-C1}
A
TS2
TS3
TS4
JTAGMODE JTAGIN JTAGCLK
ADCMCLK
6
7
8
RP9 10K
VCC
8 7 6 5
1 2 3 4
1
2
1
1
1
Kurzweil PC2 Series Service Manual
KISO {3-A1} TOPO {3-A1,D6} CLK20 {3-D8,4-D6}
SMWE {4-D1}
DACBCLK {5-D1} DACL_R {5-D1} DACDATA {5-D1} AESO {1-D6}
JTAGOUT
A
SSMRCS {4-A1}
SMA[25:01] {4-B1} ADCDATA ADCBCLK ADCL_R
65 CS 66 RD 93 WR 114 DTACK
CA[15] CA[16] ASICS {1-B3}
U10 74VHC139 2 4 A Y0 5 3 B Y1 6 Y2 7 1 G Y3
MMABELCS SMABELCS LISACS {3-A1}
5 6 7 8 9 10 11 12 13 14 15 16 19 20 21
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
101 100 99 98 97 96 95 94 115 116 117 118 119 120 121 122
FOUR DECOUPLING CAPS ON U9 & U11, ONE ON EACH SIDE
139 DACO3 140 DACO2 141 DACO1 142 DACO0
61 DACCTRL2 62 DACCTRL1 63 DACCTRL0
127 ADCI
26 ADC_RDY
2 ADCCTRL2 3 ADCCTRL1 4 ADCCTRL0
29 SMFIFOLO
59 MSYNC 67 MDATAI 64 MDATAO
BIUA14 BIUA13 BIAU12 BIUA11 BIUA10 BIUA09 BIUA08 BIUA07 BIUA06 BIUA05 BIUA04 BIUA03 BIUA02 BIUA01 BIUA00
U11 MABEL-2 MASTER
BIUD15 BIUD14 BIUD13 BIUD12 BIUD11 BIUD10 BIUD09 BIUD08 BIUD07 BIUD06 BIUD05 BIUD04 BIUD03 BIUD02 BIUD01 BIUD00
DMD11 DMD10 DMD09 DMD08 DMD07 DMD06 DMD05 DMD04 DMD03 DMD02 DMD01 DMD00
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
1
101 100 99 98 97 96 95 94 115 116 117 118 119 120 121 122
R36 10K
CA[14] CA[13] CA[12] CA[11] CA[10] CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01]
102 103 104 105 106 107 108 109 110 111 112 113
BIUD15 BIUD14 BIUD13 BIUD12 BIUD11 BIUD10 BIUD09 BIUD08 BIUD07 BIUD06 BIUD05 BIUD04 BIUD03 BIUD02 BIUD01 BIUD00
VCC
2
SLAVE
CA[14] CA[13] CA[12] CA[11] CA[10] CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01]
18 54 57 88 90 92 124 125 128
DGND 17 55 58 87 89 91 123 126 129
SMD15 SMD14 SMD13 SMD12 SMD11 SMD10 SMD09 SMD08 SMD07 SMD06 SMD05 SMD04 SMD03 SMD02 SMD01 SMD00
60 69 68 27 28
SMOE {4-A1,D1} SMWE {4-D1} MSMRCS {4-A1}
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
SMA[24] SMA[23] SMA[22] SMA[21] SMA[20] SMA[19] SMA[18] SMA[17] SMA[16] SMA[15] SMA[14] SMA[13] SMA[12] SMA[11] SMA[10] SMA[09] SMA[08] SMA[07] SMA[06] SMA[05] SMA[04] SMA[03] SMA[02] SMA[01]
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
SMD[15] SMD[14] SMD[13] SMD[12] SMD[11] SMD[10] SMD[09] SMD[08] SMD[07] SMD[06] SMD[05] SMD[04] SMD[03] SMD[02] SMD[01] SMD[00]
B
C
MDMD[11] MDMD[10] MDMD[09] MDMD[08] MDMD[07] MDMD[06] MDMD[05] MDMD[04] MDMD[03] MDMD[02] MDMD[01] MDMD[00]
64 MDATAO 67 MDATAI 59 MSYNC
29 SMFIFOLO
ADC_RDY
4 ADCCTRL0 3 ADCCTRL1 2 ADCCTRL2
26
127
MABEL-2
5 6 7 8 9 10 11 12 13 14 15 16 19 20 21
VCC
SMAV SMR/W SMRAS SMREF SMRCS SMA24 SMA23 SMA22 SMA21 SMA20 SMA19 SMA18 SMA17 SMA16 SMA15 SMA14 SMA13 SMA12 SMA11 SMA10 SMA09 SMA08 SMA07 SMA06 SMA05 SMA04 SMA03 SMA02 SMA01
143 DMRAS 1 DMCAS 144 DMR/W
65 CS 66 RD 93 WR 114 DTACK
DMA08 DMA07 DMA06 DMA05 DMA04 DMA03 DMA02 DMA01 DMA00
86 RESET 56 CLK
130 131 132 133 134 135 136 137 138
86 RESET 56 CLK
BIUA14 BIUA13 BIAU12 BIUA11 BIUA10 BIUA09 BIUA08 BIUA07 BIUA06 BIUA05 BIUA04 BIUA03 BIUA02 BIUA01 BIUA00
U9
DMD00 DMD01 DMD02 DMD03 DMD04 DMD05 DMD06 DMD07 DMD08 DMD09 DMD10 DMD11
SMD15 SMD14 SMD13 SMD12 SMD11 SMD10 SMD09 SMD08 SMD07 SMD06 SMD05 SMD04 SMD03 SMD02 SMD01 SMD00
VCC
17 55 58 87 89 91 123 126 129 DGND
22 TCK 23 TDI 24 TDO 25 TMS
113 112 111 110 109 108 107 106 105 104 103 102
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
18 54 57 88 90 92 124 125 128
22 TCK 23 TDI 24 TDO 25 TMS
SDMD[00] SDMD[01] SDMD[02] SDMD[03] SDMD[04] SDMD[05] SDMD[06] SDMD[07] SDMD[08] SDMD[09] SDMD[10] SDMD[11]
SMD[15] SMD[14] SMD[13] SMD[12] SMD[11] SMD[10] SMD[09] SMD[08] SMD[07] SMD[06] SMD[05] SMD[04] SMD[03] SMD[02] SMD[01] SMD[00]
SMA24 SMA23 SMA22 SMA21 SMA20 SMA19 SMA18 SMA17 SMA16 SMA15 SMA14 SMA13 SMA12 SMA11 SMA10 SMA09 SMA08 SMA07 SMA06 SMA05 SMA04 SMA03 SMA02 SMA01
DMA00 DMA01 DMA02 DMA03 DMA04 DMA05 DMA06 DMA07 DMA08
C
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
138 137 136 135 134 133 132 131 130
B
SMA[24] SMA[23] SMA[22] SMA[21] SMA[20] SMA[19] SMA[18] SMA[17] SMA[16] SMA[15] SMA[14] SMA[13] SMA[12] SMA[11] SMA[10] SMA[09] SMA[08] SMA[07] SMA[06] SMA[05] SMA[04] SMA[03] SMA[02] SMA[01]
SMAV SMR/W SMRAS SMREF SMRCS
144 DMR/W 1 DMCAS 143 DMRAS
2
60 69 68 27 28
ADCI
1
R14 10K
63 DACCTRL0 62 DACCTRL1 61 DACCTRL2
SMA[25] 142 DACO0 141 DACO1 140 DACO2 139 DACO3
SMA[25]
CD[15:00] {1-A8,3-A1,4-C6} SMD[15:00] {4-C1} RP6 10K
VCC 1 2 3 4
DO NOT INSTALL
ADCDATA
RP5 100 D
ADCBCLK ADCL_R ADCMCLK
1 2 3 4
+12V
J407 2 4 6 8 10 12 14
8 7 6 5
~12V DO NOT INSTALL
1
7-4
2 1
DO NOT INSTALL
DATA BITCLK L/R MCLK VCC +5Vana -5Vana
SGND1 SGND2 SGND3 SGND4 DGND NC AGND
C8 ADC 1000PF DO NOT INSTALL
2
1 3 5 7 9 11 13
RP10 10K 8 7 6 5
2
SMT2.5T L3 1
VCC
1 2 3 4
SDMD[05] SDMD[03] SDMD[02] SDMD[01]
RP7 10K
VCC 1 2 3 4
SDMD[11] SDMD[10] SDMD[09] SDMD[08]
1 2 3 4
RP8 10K 1 2 3 4
8 7 6 5
MDMD[11] MDMD[10] MDMD[09] MDMD[08]
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
RP12 10K 8 7 6 5
3
MDMD[05] MDMD[03] MDMD[02] MDMD[01]
RP11 10K
VCC 8 7 6 5
8 7 6 5
1 2 3 4
SDMD[07] SDMD[06] SDMD[04] SDMD[00]
4
5
6
8 7 6 5
MDMD[07] MDMD[06] MDMD[04] MDMD[00]
PC88 II ENGINE MASTER/SLAVE MABELS Filename: P82RDV4 Eng: Mfg: Doc: 021197 7
Date: 9/19/2000 By: T. THOMPSON Sht 2 of 5 Rev: D V4 8
D
Engine Board–Lisa F/X 128Ch Option, Clocks (page 3 of 5) 2
3
DMAA[09] DMAA[08]
12 13
DMAA[07] DMAA[06] DMAA[05] DMAA[04] DMAA[03] DMAA[02] DMAA[01] DMAA[00]
11
TS6
Y2 2 1
C10 33PF
24.5760MHz
DMA[07] DMA[06] DMA[05] DMA[04] DMA[03] DMA[02] DMA[01] DMA[00]
VCC
C13 6.8pF,50V,NPO
1
3
DRAM Decoupling Caps
4 5
DMA[09] DMA[08]
BSMCAS BSMR/W 18 14 34 37 35 38
DMA[07] DMA[06] DMA[05] DMA[04] DMA[03] DMA[02] DMA[01] DMA[00]
8 7 6 5 8 7 6 5
17 13 33 36 DMA[09] DMA[08] DMA[07] DMA[06] DMA[05] DMA[04] DMA[03] DMA[02] DMA[01] DMA[00] DMA[09] DMA[08]
3VCC
GND VR2
+ C89 33uF, TANT
32 31 30 29 28 27 24 23 22 21 20 19
RAS1M RAS4M UCAS1M 49 D15 48 UCAS4M D14 LCAS1M 47 D13 46 LCAS4M D12 44 D11 W1M 43 D10 W4M 42 D09 OE1M 41 D08 OE4M 10 D07 A9/A11 9 D06 A8/A10 8 D05 A7/A9 7 D04 A6/A8 5 D03 A5/A7 4 D02 A4/A6 3 D01 A3/A5 2 D00 A2/A4 1 A1/A3 VCC1 6 A0/A2 VCC2 12 NC/A1 VCC3 25 NC/A0 VCC4
3VCC
3V ONLY
VCC
TOPO {2-A8}
D
1
C80 0.1 uF
2
1
C79 0.1 uF
2
1
C85 0.1 uF
2
1
C84 0.1 uF
2
1
C83 0.1 uF
LISA/MABEL Decoupling Caps
U30 Decoupling Caps 3VCC
2
1 2
1 2
1 2
2
3
17 13 33 36 DMA[09] DMA[08] DMA[07] DMA[06] DMA[05] DMA[04] DMA[03] DMA[02] DMA[01] DMA[00] DMA[09] DMA[08]
32 31 30 29 28 27 24 23 22 21 20 19
4
DMD[07] DMD[06] DMD[05] DMD[04] DMD[03] DMD[02] DMD[01] DMD[00]
C
1
DGND26 39 45 50
VCC J408 128 CHANNEL OPTION
VCC
3 5 7 9 11 13 15 17 19 21 23
VCC1
VCC2 GND2
SS SCK MISO MOSI
SGND1 PRSNT SGND2
KISI TOPO CLK20 RESET CLK25
SGND3 SGND4 SGND5 SGND6 SGND7
GND3 VCC3
GND4 VCC4
VCC
VCC
R19 220, 1/4W
R21 220, 1/4W
VCC
2 4
R20 330, 1/4W
6 8 10 12 14 16 18 20 22 24
R23 10K
KISI {2-A1} CLK20 {2-A8,4-D6}
OPRSNT {1-C1}
CLK25 {1-C1, 2-A1,5-C1}
YOUNG CHANG CO., LTD.
6
D
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
Filename: P82RDV4 Eng: Mfg: Doc: 021197 5
R22 330, 1/4W
PC88 II ENGINE LISA F/X, 128CH OPTION, CLOCKS
C81 0.1 uF
3V ONLY 1
RAS1M RAS4M UCAS1M 49 D15 48 UCAS4M D14 LCAS1M 47 D13 46 LCAS4M D12 44 D11 W1M 43 D10 W4M 42 D09 OE1M 41 D08 OE4M 10 D07 A9/A11 9 D06 A8/A10 8 D05 A7/A9 7 D04 A6/A8 5 D03 A5/A7 4 D02 A4/A6 3 D01 A3/A5 2 D00 A2/A4 1 A1/A3 VCC1 6 A0/A2 VCC2 12 NC/A1 VCC3 25 NC/A0 VCC4
3VCC and DRAM_PWR need fat traces
2
6
U28 Decoupling Cap 3VCC
B
C23 0.1 uF
2
R38
SS {1-C1} SCK {1-C1} MISO {1-B1,C3} MOSI {1-B1,C3}
C82 0.1 uF
DMD[23] DMD[22] DMD[21] DMD[20] DMD[19] DMD[18] DMD[17] DMD[16] DMD[15] DMD[14] DMD[13] DMD[12] DMD[11] DMD[10] DMD[09] DMD[08]
LOCATE 220/330 RESISTORS AT FARTHEST POINT FROM DRIVER
1
C90 0.1 uF
C22 0.1 uF
U32 1M/4Mx16 DRAM 18 14 34 37 35 38
DGND26 39 45 50
3V ONLY
U29 Decoupling Caps 3VCC
VCC
U31 1M/4Mx16 DRAM
100
RESET {1-B4,D5;2-A1;4-D6;5-C1}
C87 0.1 uF
2
C86 0.1 uF
BSMRAS
U14 74AC08 C14 33PF
DRAM Decoupling Caps DRAM_PWR
DRAM_PWR 1
R37 10K
DGND 22 37 42
DRAM_PWR
LM3940IS-3.3 1 3 IN OUT
C88 .47uF
A
Use Dual Footprint for DRAM's
3V ONLY VCC
JP2 5V/3V
25
1
2
1 2
2 1
2
U14 74AC08
2 2 1
1
4 10 15 21 28 34 39 45 DGND
24
DMD[07] DMD[06] DMD[05] DMD[04] DMD[03] DMD[02] DMD[01] DMD[00]
DMD[07] DMD[06] DMD[05] DMD[04] DMD[03] DMD[02] DMD[01] DMD[00]
1 VCC1 6 VCC3 VCC2
21
G2
2
R65 1.5K
R16 1M
VCC
1 2 3 4 1 2 3 4
RP20
DMA[09] DMA[08]
1 VCC1 6 VCC3 VCC2
21
2
1
4
DIR2
R18 10K
1
2
47
1
VCC
U13 NC7SZU04
BSMRAS BSMCAS BSMR/W
DMA[09] DMA[08] DMA[07] DMA[06] DMA[05] DMA[04] DMA[03] DMA[02] DMA[01] DMA[00]
41 40 39 38 36 35 34 33 10 9 8 7 5 4 3 2
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
1
C12 33PF
20.0000MHZ
U6 74AC08
7 VCC2 18 VCC1 47 A1[1] 46 A1[2] 44 A1[3] 43 A1[4] 41 A1[5] 40 A1[6] 38 A1[7] 37 A1[8] 48 G1 36 A2[1] 35 A2[2] 33 A2[3] 32 A2[4] 30 A2[5] 29 A2[6] 27 A2[7] 26 A2[8]
1
8
42 VCC4 31 VCC3 2 B1[1] 3 B1[2] 5 B1[3] 6 B1[4] 8 B1[5] 9 B1[6] 11 B1[7] 12 B1[8] 1 DIR1 13 B2[1] 14 B2[2] 16 B2[3] 17 B2[4] 19 B2[5] 20 B2[6] 22 B2[7] 23 B2[8]
2
1 2
2
SMRAS SMCAS SMR/W
1
Y1 2 1
9 10
C11 6.8pF,50V,NPO
2 1
2 C9 33PF
U6 74AC08
2 2 1
1
C
R17 10K R64 1.5K
R15 1M
U30 74LCX162245
1 2 3 4 1 2 3 4
RP21 RP19
14 RAS 30 UCAS 31 LCAS 13 W 29 OE 28 A9 27 A8 26 A7 25 A6 24 A5 23 A4 20 A3 19 A2 18 A1 17 A0
DGND 22 37 42
8 7 6 5 47 47
DMD[23] DMD[22] DMD[21] DMD[20] DMD[19] DMD[18] DMD[17] DMD[16] DMD[15] DMD[14] DMD[13] DMD[12] DMD[11] DMD[10] DMD[09] DMD[08]
1 2 3
4
1
2
1
U12 NC7SZU04
DMAA[09] DMAA[08] DMAA[07] DMAA[06] DMAA[05] DMAA[04] DMAA[03] DMAA[02] DMAA[01] DMAA[00]
TS5 VCC
1 2 3 4
DMA[09] DMA[08] DMA[07] DMA[06] DMA[05] DMA[04] DMA[03] DMA[02] DMA[01] DMA[00]
41 40 39 38 36 35 34 33 10 9 8 7 5 4 3 2
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
1
SMR/W SMCAS
SMCAS SMR/W
DMD[15] DMD[14] DMD[13] DMD[12] DMD[11] DMD[10] DMD[09] DMD[08]
RP18 47 47 R39 1 2
SMRAS
10
47 RP16 RP17 47
8 7 6 5 8 7 6 5
14 RAS 30 UCAS 31 LCAS 13 W 29 OE 28 A9 27 A8 26 A7 25 A6 24 A5 23 A4 20 A3 19 A2 18 A1 17 A0
2
VCC GND DIR G 1
20
DMD[07] DMD[06] DMD[05] DMD[04] DMD[03] DMD[02] DMD[01] DMD[00]
RP14 RP15
DMD[23] DMD[22] DMD[21] DMD[20] DMD[19] DMD[18] DMD[17] DMD[16]
1
11
2 3 4 5 6 7 8 9
47 47
8 7 6 5 8 7 6 5
2
12 13
A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8]
8 7 6 5 8 7 6 5
DMDD[07] DMDD[06] DMDD[05] DMDD[04] DMDD[03] DMDD[02] DMDD[01] DMDD[00]
RP13
1
U14 74AC08
B[1] B[2] B[3] B[4] B[5] B[6] B[7] B[8]
1 2 3 4 1 2 3 4
47
1
B
18 17 16 15 14 13 12 11
DMDD[15] DMDD[14] DMDD[13] DMDD[12] DMDD[11] DMDD[10] DMDD[09] DMDD[08]
25
24
U28 74LCX2245 DMDD[07] DMDD[06] DMDD[05] DMDD[04] DMDD[03] DMDD[02] DMDD[01] DMDD[00]
1 2 3 4 1 2 3 4
U17 1Mx16 DRAM
2
8
DMD[15] DMD[14] DMD[13] DMD[12] DMD[11] DMD[10] DMD[09] DMD[08]
DMDD[23] DMDD[22] DMDD[21] DMDD[20] DMDD[19] DMDD[18] DMDD[17] DMDD[16]
VCC
U16 1Mx16 DRAM
1
9 10
DMAA[09] DMAA[08] DMAA[07] DMAA[06] DMAA[05] DMAA[04] DMAA[03] DMAA[02] DMAA[01] DMAA[00]
DMD[23] DMD[22] DMD[21] DMD[20] DMD[19] DMD[18] DMD[17] DMD[16]
G2
DIR2 4 10 15 21 28 34 39 45 DGND
RP's Share Footprint Area with U28 - U30
2
U14 74AC08
DMDD[15] DMDD[14] DMDD[13] DMDD[12] DMDD[11] DMDD[10] DMDD[09] DMDD[08]
7 VCC2 18 VCC1 47 A1[1] 46 A1[2] 44 A1[3] 43 A1[4] 41 A1[5] 40 A1[6] 38 A1[7] 37 A1[8] 48 G1 36 A2[1] 35 A2[2] 33 A2[3] 32 A2[4] 30 A2[5] 29 A2[6] 27 A2[7] 26 A2[8]
2
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08] CD[07] CD[06] CD[05] CD[04] CD[03] CD[02] CD[01] CD[00]
DMDD[23] DMDD[22] DMDD[21] DMDD[20] DMDD[19] DMDD[18] DMDD[17] DMDD[16]
42 VCC4 31 VCC3 2 B1[1] 3 B1[2] 5 B1[3] 6 B1[4] 8 B1[5] 9 B1[6] 11 B1[7] 12 B1[8] 1 DIR1 13 B2[1] 14 B2[2] 16 B2[3] 17 B2[4] 19 B2[5] 20 B2[6] 22 B2[7] 23 B2[8]
1
CD[15:00] {1-A8,2-C1,4-C6}
U29 74LCX162245
2
CA[09] CA[08] CA[07] CA[06] CA[05] CA[04] CA[03] CA[02] CA[01]
BSMRAS BSMCAS BSMR/W
1
LISACS {2-B5} CWE {1-A3,C4,C5;2-A1;4-C6} DSACK1 {1-A1,2-A1} CA[20:00] {1-A8,2-A1,4-B5}
8
DECOUPLING CAPS NEAR PINS 1 AND 21
3VCC
2
A
3V ONLY SMRAS SMCAS SMR/W DMDD[23] DMDD[22] DMDD[21] DMDD[20] DMDD[19] DMDD[18] DMDD[17] DMDD[16] DMDD[15] DMDD[14] DMDD[13] DMDD[12] DMDD[11] DMDD[10] DMDD[09] DMDD[08] DMDD[07] DMDD[06] DMDD[05] DMDD[04] DMDD[03] DMDD[02] DMDD[01] DMDD[00]
1
28 SMRAS 29 SMCAS 30 SMR/W 72 64 CLK DMD[23] 63 DMD[22] 22 62 RESET DMD[21] 61 DMD[20] 20 CS 60 DMD[19] 21 R/W 59 DMD[18] 23 DTACK 58 DMD[17] 15 57 A[9] DMD[16] 14 56 A[8] DMD[15] 13 55 A[7] DMD[14] 12 54 A[6] DMD[13] 11 53 A[5] DMD[12] 10 50 A[4] DMD[11] 9 49 A[3] DMD[10] 8 48 A[2] DMD[09] 7 47 A[1] DMD[08] 6 46 A[0] DMD[07] 45 DMD[06] 3 D[15] 44 2 DMD[05] D[14] 43 DMD[04] 1 D[13] 16 DMD[03] 84 D[12] 19 DMD[02] 83 D[11] 65 DMD[01] 82 D[10] 66 DMD[00] 79 D[09] 78 40 D[08] DMA[9] 77 39 D[07] DMA[8] 76 38 D[06] DMA[7] 75 37 D[05] DMA[6] 74 36 D[04] DMA[5] 70 35 D[03] DMA[4] 69 34 D[02] DMA[3] 68 33 D[01] DMA[2] 67 32 D[00] DMA[1] 31 DMA[0] VCC 4 17 41 51 71 80 DGND 5 18 42 52 73 81
RESET {1-B4,D5;2-A1;4-D6;5-C1}
7
26
2
TOPO {2-A8} KISO {2-A8}
6
LISA KISO
25 TOP 24 KISI0 27 KISI1
5
2
U15 DECOUPLING CAPS NEAR VCC PINS, ONE CAP ON EACH SIDE
4
19
1
Kurzweil PC2 Series Service Manual
7
Date: 9/19/2000 By: T. THOMPSON Sht 3 of 5 Rev: D V4 8
7-5
Kurzweil PC2 Series Service Manual
Engine Board–Sound ROM, Uart, Glue, Decoupling (page 4 of 5)
1
2
3
4
5
6
7
8
VCC
VCC
VCC
VCC
VCC
BHE
SMA[23] SMA[22] SMA[21] SMA[20] SMA[19] SMA[18] SMA[17] SMA[16] SMA[15] SMA[14] SMA[13] SMA[12] SMA[11] SMA[10] SMA[09] SMA[08] SMA[07] SMA[06] SMA[05] SMA[04] SMA[03] SMA[02]
33
14 OE 12 CE D15/A-1 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
31 29 27 25 22 20 18 16 30 28 26 24 21 19 17 15
SMD[15] SMD[14] SMD[13] SMD[12] SMD[11] SMD[10] SMD[09] SMD[08]
1 44 43 2 3 34 35 36 37 38 39 40 41 42 4 5 6 7 8 9 10 11
A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
BHE
D15/A-1 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
31 29 27 25 22 20 18 16 30 28 26 24 21 19 17 15
1
1
1
1
1
1
1
1
1
1
1 2
2
2
2
2
2
2
2
2
2
VCC
VCC
VCC
VCC
VCC
VCC
VCC
1
1
1
1
1
1
1
C30 0.1 uF
C32 0.1 uF
C34 0.1 uF
C36 0.1 uF
2
C28 0.1 uF
2
C26 0.1 uF
2
C24 0.1 uF
2
C20 0.1 uF
2
C18 0.1 uF
2
C16 0.1 uF
A
C38 0.1 uF
MRXD {1-D6}
VCC CA[20:00] {1-A8,2-A1,3-A1} CA[02] CA[01] CA[00] UARTCS {1-C3}
VCC
R24 10K
PRSNT
58 60 62
56
A23 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01
VCC1 VCC2 VCC3
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
CD[15] CD[14] CD[13] CD[12] CD[11] CD[10] CD[09] CD[08]
2 34 64
35 36 38 39 40 42 43 44 46 47 48 50 51 52 54 55
SMD[15] SMD[14] SMD[13] SMD[12] SMD[11] SMD[10] SMD[09] SMD[08] SMD[07] SMD[06] SMD[05] SMD[04] SMD[03] SMD[02] SMD[01] SMD[00]
RESET {1-D5}
CS WE OE
PRSNT
17 10 11 13
MTXD {1-D6}
36 40 37 41 42 43 38 35 27 32
IRQ6 {1-B1,C3}
33 26
9
8
18 19
U1 74VHC14
VCC: 44 GND: 22 U21 16V8-15
VCC
CA[00]
2 3 4 5 6 7 8 9
E {1-A3} LCDCS {1-B3,D6} SIZ1 {1-A3} SIZ0 {1-A3}
R25 10K
RESET {1-B4,D5;2-A1;3-D1;5-C1}
1
CLK20 {2-A8,3-D8}
56
I1 I2 I3 I4 I5 I6 I7 I8
O1 O2 O3 O4 O5 O6 O7 O8
CLK OE
12 13 14 15 16 17 18 19
1
R26 47
2
LCDE {1-D6} CHB {1-C4} CLB {1-C4} 1
1
R27 47
C
IRQ4 {1-B1,C3}
2
R68 1K
2
CD[04]
CLK5
11
16V8
ROM1PR {1-C1}
1
SMD[15] SMD[14] SMD[13] SMD[12] SMD[11] SMD[10] SMD[09] SMD[08] SMD[07] SMD[06] SMD[05] SMD[04] SMD[03] SMD[02] SMD[01] SMD[00]
3 4 6 7 8 10 11 12 14 15 16 18 19 20 22 23 24 26 27 28 30 31 32
CD[15:00] {1-A8,2-C1,3-A1}
U22 ST16C550CJ44 29 A2 BAUDOUT 30 A1 RCLK 31 A0 SIN 16 CS2 SOUT 15 CS1 14 CS0 RTS 28 ADS CTS 25 DTR RD DSR 24 RD DCD 21 WR RI 20 WR OUT1 9 D7 OUT2 8 D6 7 D5 TXRDY 6 RXRDY D4 5 D3 INTR 4 D2 3 D1 DDIS 2 D0 XIN 39 MR XOUT
R28 110
DGND: 1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 59 61 63
2
35 36 38 39 40 42 43 44 46 47 48 50 51 52 54 55
SMA[23] SMA[22] SMA[21] SMA[20] SMA[19] SMA[18] SMA[17] SMA[16] SMA[15] SMA[14] SMA[13] SMA[12] SMA[11] SMA[10] SMA[09] SMA[08] SMA[07] SMA[06] SMA[05] SMA[04] SMA[03] SMA[02] SMA[01]
VCC
1
D15 D14 D13 D12 D11 D10 D09 D08 D07 D06 D05 D04 D03 D02 D01 D00
2 34 64
DGND: 1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 59 61 63
D
C37 0.1 uF
B SMD[07] SMD[06] SMD[05] SMD[04] SMD[03] SMD[02] SMD[01] SMD[00]
2
VCC1 VCC2 VCC3
J410 ROM Option
VCC
2
CS WE OE
C35 0.1 uF
14 OE 12 CE
VCC 23 DGND 13 32
1
J409 ROM Option
EXROM0CS SMWE {2-A6,B8} SMOE {2-A8}
C33 0.1 uF
VCC
CWE {1-A3,C4,C5;2-A1;3-A1}
58 60 62
C31 0.1 uF
VCC
SMD[15:00] {2-D8}
C
C29 0.1 uF
33
SMA[25:01] {2-A8}
A23 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01
C27 0.1 uF
U20 ROM4MX16
VCC 23 DGND 13 32
3 4 6 7 8 10 11 12 14 15 16 18 19 20 22 23 24 26 27 28 30 31 32
C25 0.1 uF
VCC
2
SMA[01] U19 ROM4MX16
SMA[23] SMA[22] SMA[21] SMA[20] SMA[19] SMA[18] SMA[17] SMA[16] SMA[15] SMA[14] SMA[13] SMA[12] SMA[11] SMA[10] SMA[09] SMA[08] SMA[07] SMA[06] SMA[05] SMA[04] SMA[03] SMA[02] SMA[01]
C91 0.1 uF
VCC
2
SMA[01]
B
C21 0.1 uF
1
5
A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 A01 A00
C19 0.1 uF
SROMCS
SMOE {2-A8}
1 44 43 2 3 34 35 36 37 38 39 40 41 42 4 5 6 7 8 9 10 11
C17 0.1 uF
EXROM0CS EXROM1CS
NC7SZ08 U18
SMA[23] SMA[22] SMA[21] SMA[20] SMA[19] SMA[18] SMA[17] SMA[16] SMA[15] SMA[14] SMA[13] SMA[12] SMA[11] SMA[10] SMA[09] SMA[08] SMA[07] SMA[06] SMA[05] SMA[04] SMA[03] SMA[02]
C15 0.1 uF
2
2
VCC
2
GND VCC
VCC
1
4
VCC
2
SSMRCS {2-A8} MSMRCS {2-B8}
VCC
1
2 1
VCC
2
SMA[24] SMA[25]
U10 74VHC139 14 12 A Y0 11 13 B Y1 10 Y2 9 15 G Y3 3
VCC
1
A
VCC 1
DECOUPLING
EXROM1CS
YOUNG CHANG CO., LTD.
ROM0PR {1-C1}
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC88 II ENGINE SOUND ROM, UART, GLUE, DECOUPLING Filename: P82RDV4 Eng: Mfg: Doc: 021197 1
7-6
2
3
4
5
6
7
Date: 9/19/2000 By: T. THOMPSON Sht 4 of 5 Rev: D V4 8
D
Engine Board–Audio Channel, Muting Control (page 5 of 5) 1
2
3
Kurzweil PC2 Series Service Manual
4
5
6
7
8
+12V
2
2
2
C70 0.1 uF
2
4
U24
R52 475, 1%, 1/16W 1 2
10UF C66 +
0.1 uF C63
~12V
1
C71 1
A
1
-
C56 5600pF 5% NPO
~12V
10UF
1
1
0.1 uF C74
2
1 2
+
2
2
R60 1.24K, 1%, 1/16W 1 2
3
2
U26 NE5532
1
1
-
NE5532
+ C67
R48 464, 1%, 1/16W
2200pF 5% NPO
2
1
1
GND
2
+
R44 499, 1%, 1/16W 1 2
3
IN OUT
C69 0.1 uF
2
+
+5VANA
VR1 78M05 1
3
R56 453, 1%, 1/16W 1 2
C62 0.1 uF
8
2
C48 47uF 35V 1 2
2
3
BAS40 D4
BV-32
+12V
R40 487, 1%, 1/16W 1 2
8
1
2
1
1
R32 330
4
1 2 3
+1 +2
A
C52 5600pF 5% NPO 1 2
C73 0.1 uF
1
+12V
BUVDD 1
+VBAT J411
RY1 DPDT C53 5600pF 5% NPO 1 2
9
NC
8 7 NO
C
1
E
2 2
B
R35 36 1/8W
R49 464, 1%, 1/16W PC2 AUDIO OUT 5 4 3 2 1
+12V
-
2
3 2
U27 NE5532
2
9 10 GJ1 Ground Join
11 12 13 14
SMUTE DFS DEM0 DEM1 DIF0 DIF1 DIF2
AOUTR+ AOUTLAOUTL+ AVSS AVDD VREFH VREFL SVSS
1
2
0.1 uF C61
3
10UF C64 +
~12V
NO
1
-
1+
2
10
1
2
25 24
C55 5600pF 5% NPO 1 2
20 21 22
C51 47uF 35V 1 2
23 19 18 17
C42 0.1 uF
10UF
+ C45
5
R63 453, 1%, 1/16W 1 2
6
+
C43 0.1 uF
R43 487, 1%, 1/16W 1 2
7
+ C46 10UF
R47 499, 1%, 1/16W 1 2
NE5532 5
-
U27 NE5532 R67 1.24K, 1%, 1/16W 1 2
16 15
+
2
6
C76 1
C59 5600pF 5% NPO
+ -
7 U25
R55 475, 1%, 1/16W 1 2
YOUNG CHANG CO., LTD.
2
PC88 II ENGINE AUDIO CHANNEL, MUTING CONTROL Filename: P82RDV4 Eng: Mfg: Doc: 021197
3
4
5
6
D
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
R51 464, 1%, 1/16W
IMPORTANT! - PLACE GJ1 AS CLOSE AS POSSIBLE TO U23-14,15
2
4
0.1 uF C47
2200pF 5% NPO
1
NC
2
1
C44 + 10UF
2
2 1
D
LRCK
AOUTR-
C
2
1
DACMUTE {1-C1,C4}
SDATA
VCOM
U25
R50 464, 1%, 1/16W
1
8
BICK
26
+5VANA
7
DACL_R {2-A8}
P/_S
PD
C75 1
NC
7 NO
R54 475, 1%, 1/16W 1 2
2200pF 5% NPO
27
2
DACDATA {2-A8}
CKS0
1
6
CKS1
MCLK
1
4 5
DACBCLK {2-A8}
DVDD
2
3
2
28
1
RESET {1-B4,D5;2-A1;3-D1;4-D6}
2
CKS2
2
2
CLK25 {1-C1,2-A1,3-D8}
DVSS
1
1
1
1
-
C58 5600pF 5% NPO
~12V
2
+
AK4393 R70 47
0.1 uF C78
U23
1
1
2
2
R66 1.24K, 1%, 1/16W 1 2
2
1
C92 + 1000uF, 16V
9
8
+
2
1 4
+
+
1
2
8
3
R62 453, 1%, 1/16W 1 2
RY2 DPDT
10UF
NE5532
1
C50 47uF 35V 1 2
R46 499, 1%, 1/16W 1 2
ROUT~ ROUT+ AGND LOUT~ LOUT+ J412
+ C65
4
8
R42 487, 1%, 1/16W 1 2
C60 0.1 uF
2
1
C77 0.1 uF
2
1 2
2
C54 5600pF 5% NPO 1 2
1
+12V
DNS
0.1 uF C41
1+
10
2
S1A (1N4001) Q2 D5 MMBT2222A
C
10UF C39
-
R53 475, 1%, 1/16W 1 2
To Coils
VCC
VCC
NO
U24
C57 5600pF 5% NPO
C72 1
1 C
-
4
1
2
B
7
E
MUTE {1-D1,D3}
2
6
NC
3
+
C
1
1
2
5
2200pF 5% NPO
1 D3 LL4148 2 1
NE5532
2
1 2 1
R29 10K
2
R34 1K
22UF 16V
U26 NE5532
R45 499, 1%, 1/16W 1 2
1
2
E
MMBT2907A Q4
MMBT2907A Q3
B
RESET {1-B4,D5;2-A1; 3-D1;4-D6}
-
R61 1.24K, 1%, 1/16W 1 2
VCC
R33 470
+ C40
R41 487, 1%, 1/16W 1 2
7
VCC
B
R31 470
+
2
VCC
R30 4.7K
D2 LL4148 1 2
6
+
1
B
5
R57 453, 1%, 1/16W 1 2
1
C49 47uF 35V 1 2
VCC
7
Date: 9/19/2000 By: D. O'NEILL Sht 5 of 5 Rev: D V4 8
7-7
Front Panel and IBBB Board (keyboard models)–FP Buttons and LEDs (page 1 of 2)
ROW7 ROW6 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0
B COL9
1
1
RED D63
SSSb4 RED D56
ELED
SSSt7 1
RED D57 2
RED D50 2
RED D42
2
SSSb6
1
1
1
1
SSSb5
RED D34
1
SSSb9
SSSb8
RED D43
RED D51
SSSb7 1
SSSt8
RED D35
1
SSSt9
RED D27
RED D58
RED D66
2
RED D21
1
SS2
SS1
RED D15
2
R4 15
ZPb2
RED D9
2
18 17 16 15 14 13 12 11
B[1] B[2] B[3] B[4] B[5] B[6] B[7] B[8]
A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8]
1 2
1 2
RED D67
2
RED D59
2
2
2
2
B
SSSb11
1
1
1
1
1
1 2
1
1
2
RED D68
2
RED D60
2
RED D53
2
RED D37
2
Eb2
Eb1
1
Et1
1
1
1 2
RED D29
RED D12
RED D24
SPb3
1
SPt3
1
SPb2
RED D38
Eb3 RED D69
2
ZONE 2
ZONE 3
ZONE 4
SOLO 2 S32 TACT
S40 TACT
S48 TACT
S55 TACT
S63 TACT
IBBB 1
SSSt3 2 S33 TACT
SSSt2 2 S41 TACT
SSSt1 2 S49 TACT
SSSb4 3 2 S56 TACT
SSSb1 2 S64 TACT
IBBB 2
<<< 2
S7 TACT
3
3
EQ 3
E 2
3
3
F 2
3
G
3
2
3
2
SSSt6 3 2 S20 TACT
SSSt5 3 2 S26 TACT
SSSt4 3 2 S34 TACT
SSSb5 3 2 S42 TACT
SSSt7 3 2 S50 TACT
SSSb6 3 2 S57 TACT
SSSb3 3 2 S65 TACT
ZPt2
ZPt3
SS1
3 2 S2 TACT
3 2 S9 TACT
ZPb2 3 2 S15 TACT
3 2 S21 TACT
SS2 3 2 S27 TACT
SSSt9 3 2 S35 TACT
SSSt8 3 2 S43 TACT
SSSb8 3 2 S51 TACT
SSSb9 3 2 S58 TACT
SSSb7 3 2 S66 TACT
ZPb3 2 S16 TACT
SPb1 2 S22 TACT
SS4
SSSt11 3 2 S44 TACT
SSSt10 3 2 S52 TACT
SSSb10 2 S59 TACT
SSSb11 3 2 S67 TACT
3
ZPt4 2
3
2
S3 TACT
S10 TACT
MPt2 2 S4 TACT
MPt1 2 S11 TACT
MPt3 2 S5 TACT
SPb2 2 S12 TACT
3
3
S6 TACT
3
2
S17 TACT
3
S18 TACT
3
3
S13 TACT
S19 TACT
3
3
3
3
2
SPb3 3 2 S38 TACT
8 2
3
S25 TACT
S31 TACT
2
S37 TACT
S30 TACT
3 2
Et3 2
7 2
2
S36 TACT
S29 TACT
S24 TACT
6 2
3
Et2 2
SPt3 2
2
S28 TACT
S23 TACT
5 3
2 2
3
SPt2
3
3
SS3
3
4
3
1 3
3
CLEAR 3 2 S45 TACT +/3
3 S39 TACT
CANCEL 3 2 S54 TACT
2
S46 TACT
Eb1 3
2
3
3
3
S61 TACT
3
S47 TACT
2
R13 10K 1
2 R14 10K
1
2 R15 10K 1
2
R9 10K R10 10K 1
R16 10K
2 1
2
S69 TACT ENTER 3 2 S70 TACT
2
S62 TACT
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC 88 II FRONT PANEL and IBBB FP Buttons and LEDs Filename: 021199B1 Eng: DMH Mfg: Doc: 021199-000
7-8
2
3
4
5
6
2
2
Eb3 2
+ 2
1
2
S68 TACT
3
R12 10K
1
Eb2 2
S60 TACT
0
9 2
Et1 3 2 S53 TACT
3
2 C
3
ZPb1 3 2 S14 TACT
3 2 S1 TACT
VCC
R11 10K 1
>>> 3 2 S8 TACT
ZPt1
1 2 3 4 5
SSSb10
RED D52
2
RED D5
3
LEDROW0 LEDROW1 SWROW0 SWROW1 COL4
SSSt10
RED D44
Et3
Et2
RED D23
2
MPt3
ZONE 1
J601 IBBB
SSSt11
RED D36
2
R7 15
2 3 4 5 6 7 8 9
SS4
RED D28
SPt2
RED D11
1
1
J602 FP BRIDGE 1 LEDROW1 2 LEDROW2 3 SWROW 4 COL0 5 COL1 6 COL2 7 COL3 8 NC
C4 0.1uF
2
2
1
RED D4
R6 15
1
19
MPt1 1
MPt2
1
RED D22
2
Q7 2N2222 C E
2 5 6 9 12 15 16 19
RED D16
2
B
Q[1] Q[2] Q[3] Q[4] Q[5] Q[6] Q[7] Q[8]
RED D10
2
R5 15 1
SS3
SPb1
ZPb3 1
1
RED D3
2
Q6 2N2222 C E
ZPt4 1
SPt1
B
1 OE 11 G 3 D[1] 4 D[2] 7 D[3] 8 D[4] 13 D[5] 14 D[6] 17 D[7] 18 D[8]
VCC
1
A
2
GREEN D49 2
2
1
SSSt1
bottom row middle row column # left to right Zone Parameters Sound Source Sound Parameters Midi Parameters Effects Stand Alone Effects LEDs
b m 1-11 ZP SS SP MP E
G
2
RED D55
Legend Sound/Setup/Select top row
SSS t
Q17 2SA1271
F
2
1 2
1 2
B COL8
B COL7
B COL6
1
1
ZPt3
RED D2
SPt1
1
RED D26
1
ZPt2
G2 G1
2
C
2
1
470uF 6V
ROW0 ROW1 ROW2 ROW3 ROW4 ROW5 ROW6 ROW7
1
E
Q16 2SA1271
RED D48
GREEN D41
SSSt4
SSSt5
RED D20
1
1
RED D14
2
R3 15
SSSt6
1
RED D1
U1 74HC541
2
SSSt2
GREEN D33
IBBB 2
ZONE 4 GREEN
ZPb1
ZPt1
2
+ C6
C
C3 0.1uF
RED D40
C
2
1
2
Q5 2N2222 C E
ROW0 ROW1 ROW2 ROW3 ROW4 ROW5 ROW6
C2 0.1uF
ZONE 3 GREEN
2
1
ZONE 2 GREEN
2
R8 1
U3 74HC373
D
B COL5 1
Q4 2N2222 C E
E
E
2
COL9
ZONE 1 GREEN
R2 15
SSSt3
1
2
EQ
2
COL8
C
Q15 2SA1271
1
2
RED D32
E
2
COL7
Q3 2N2222 C E
C
Q14 2SA1271
SOLO
IBBB 1
ZONE 4 RED
ZONE 3 RED
E
1
COL6
2
Q13 2SA1271
B
2
C
2
R26 10K
COL5
Q12 2SA1271
E
2
1
R25 10K
COL4
2
Q2 2N2222 C E
2
8 7 6 5 4 3 2 1
1
R24 10K
2
C
2
12 11 10 9
R23 10K
COL3
E
1
1
R22 10K
2
ZONE 2 RED
2
1
14 13
R21 10K
COL2
ZONE 1 RED
2
1
R20 10K
2
C
Q11 2SA1271
1
1
18 17
1
B
ROW7 ROW6 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0
1
COL1
Q10 2SA1271
E
8
2
B
COLA COLD COLC COLB
470uF 6V
R19 10K
COL0
2
C
7
1
SENSE DRIVE
1
+ C1
2
2
PHASEB PHASEA
20 19 16 15
2
+5V DGND3 DGND2 DGND1
1
J604 FRONT PANEL
R18 10K
Q9 2SA1271
E
2
1
R17 10K
R1 15 1
B
1
VCC
C
6
2
Q1 2N2222 C E
VCC
SW ROTARY
E
1
1 2 3
C
Q8 2SA1271
B
PHASEA COMMON PHASEB
D
E
B
A
12
C
1
SP1
B
COL0 COL1 COL2 COL3 COL4 COL5 COL6 COL7 COL8 COL9
2
13
1 2 3 4 5 6 7 9 10 11
1
14
0 1 2 3 4 5 6 7 8 9
A
2
15
B COL0
U2 74HC145
5
B COL4
4
B COL2
3
B COL1
2
2
1
B COL3
Kurzweil PC2 Series Service Manual
7
Date: 11/29/99 By: DMH Sht 1 of 2 Rev: B V1 8
D
Front Panel and IBBB Board (keyboard models)–IBBB Buttons and LEDs (page 2 of 2) 1
2
3
4
5
Kurzweil PC2 Series Service Manual 6
7
8
A
1
A
RED D6
B
2
B
J701 IBBB LEDROW0 LEDROW1 SWROW0 SWROW1 COL4
3
1 2 3 4 5
2
S72 TACT
1
Eb3
2
RED D7
3 2 S71 TACT
C
C
D
YOUNG CHANG CO., LTD.
D
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC 88 II FRONT PANEL and IBBB IBBB Buttons and LEDs Filename: 021199B1 Eng: DMH Mfg: Doc: 021199-000 1
2
3
4
5
6
7
Date: 11/29/99 By: DMH Sht 2 of 2 Rev: B V1 8
7-9
Kurzweil PC2 Series Service Manual
Connector Board (keyboard models)–Scanner (page 1 of 3)
1
2
3
4
5
6
7
8
PWRUPRST {3-A8} RESET {3-B1} INTMIDIRxD {2-B8} TOUCHSENS {2-D5}
INTMIDITxD {2-B8} IRQ {2-C8}
1 2 3 4
8 7 6 5 RP11
24 58 59 60 61 62 63 64 65
10K
EXPDL2 {2-B3}
VCC
1
B
1 2 3 4
2 R2 10K
1
8 7 6 5
PORT57 PORT56 PORT55 PORT54
RP10
10K 8 7 6 5
23 22 20 21
L1
31 CLKOUT 29 XOUT 28 XIN
PORT53 PORT52 PORT51 PORT50
R16 1M 1
26
2
RP12
12.2880MHz 2
10K 1
C4 33pF NPO
C5 33pF NPO
MONOSENS {3-D1} FTSW3 {2-D8}
+5Vref {02} U2 74HC541
FTSW2 {2-C8} 2 3 4 5 6 7 8 9
FTSW1 {2-C8}
TOUCH1 {2-D5} TOUCH2 {2-D5} TOUCH3 {2-D5}
1
COLA COLD COLC COLB
D
ROW7 ROW6 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0
7-10
1
R144 10K
2 1
R147 10K
2 1
42 43 44 45 46 47 48 49
2
RP1 100
J306
1 2 3 4
PORT67 PORT66 PORT65 PORT64
50 51 52 53 54 55 56 57
8 7 6 5 100
PORT63 PORT62 PORT61 PORT60
1 2 3 4 1 2 3 4
33 34 35 36 37 38 39 40 12 13 14 15 16 17 18 19
MUXA2 {2-C5} MUXA1 {2-C5} MUXA0 {2-C5}
RP2 8 7 6 5
8 7 6 5 RP3
18 20 19 17 15 13 11 9 7 5 3 1
100
1 2 3 4
PORT67 PORT66 PORT65 PORT64 PORT63 PORT62 PORT61 PORT60
16 14 12 10 8 6 4 2
7 6 8 5 RP4
100
1 2 3 4
1
RP5
PORT60 PORT61 PORT62 PORT63 PORT64 PORT65 PORT66 PORT67
RP13 10K
RP9 10K
VCC 1 2 3 4
8 7 6 5
PORT63 PORT62 PORT61 PORT60
PORT67 PORT66 PORT65 PORT64
8 7 6 5
100
VCC
J307
1 2 3 4
BASS7 BASS6 BASS5 BASS4 BASS3 BASS2 BASS1 BASS0
14 13
1
1
2
2 1 2 3 4
12 11 10 9 8 7 6 5 4 3 2 1
R20 110
R17 110
BASS7 BASS6 BASS5 BASS4 BASS3 BASS2 BASS1 BASS0
8 7 6 5
100
RP6
BASS7 BASS6 BASS5 BASS4
4 3 2 1
5 6 7 8
BASS3 BASS2 BASS1 BASS0
4 3 2 1
5 6 7 8
COMPONENTS TO KEEP NEARCONNECTORS CONNECTOR COMPONENTS J304 L2, R117, R20, RP6-8 J306 RP1-3 J307 RP4-5 J308 RP11,C1-3
PORT57 PORT56 PORT55 PORT54 100
2
16 14 12 10 8 6 4 2 18 20 19 17 15 13 11 9 7 5 3 1
R24 10K
18 17
RP7
C6 1000pF
T7 T6 T5 T4 T3 T2 T1 T0
FATAR_88_BASS
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC88 II CONNECTOR PCB Scanner Filename: 021221C4 Eng: Mfg: Doc: 021221-000
RP8
4
5
6
7
C
NC2 NC1 BR4 MK4 BR3 MK3 BR2 MK2 BR1 MK1 BR0 MK0
YOUNG CHANG CO., LTD.
PORT53 PORT52 PORT51 PORT50
3
BR10 MK10 BR9 MK9 BR8 MK8 BR7 MK7 BR6 MK6 BR5 MK5
CPU 18 17 16 15 14 13 12 11
1
L2 FE BEAD
B
8 7 6 5
VCC
2
T7 T6 T5 T4 T3 T2 T1 T0
FATAR_88_TREBLE
VCC 20 19 16 15
100
1
R14 10K 1
2 1
SENSE DRIVE
69 VREFADC 68 VREFDAC 71 AVCC 70 AVSS WE/ WR/ P[67] RD/E/ P[66] 72 CS/ P[65] VCC 73 A0/ P[64] VSS2 32 RDY/ P[63] VSS1 INT3/ P[62] 25 INT2/ P[61] MODE INT1/ P[60]
R34 DNS
2
PHASEB PHASEA
P[27] P[26] P[25] P[24] P[23] P[22] P[21] P[20]
R33 DNS
G1 G2
J304 FRONT PANEL +5V DGND3 DGND2 DGND1
B[1] B[2] B[3] B[4] B[5] B[6] B[7] B[8]
RESET
D7/ D6/ D5/ D4/ D3/ D2/ D1/ D0/
R32 DNS
74 75 76 77 78 79 2 3
19
C
IACK {2-B8}
A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8]
C49 0.1uF VCC
2 1
2 1
Y1
2
1
1 2 3 4
VCC
FE BEAD
R22 1.5K
2 VCC
TP1
1
R1 10K
2
VCC
4 5 6 7 8 9 10 11
PORT57 PORT56 PORT55 PORT54 PORT53 PORT52 PORT51 PORT50
2
C45 0.1uF
1
C3 1000pF
BREATH {2-C3}
1
C2 1000pF
2 1
C1 1000pF
2 1
RIBN_SLDR {2-C5}
2 1
2 1
EXPDL1 {2-A3}
P[37] P[36] RESETOUT TxD/ P[35] RxD/ P[34] AIN[7] PWM/P[33] AIN[6] EV3/ P[32] AIN[5] EV2/ P[31] AIN[4] EV1/ P[30] AIN[3] AIN[2] AIN[1] P[17] A14/ P[16] AIN[0] A13/ P[15] A15/ P[57]/SLD7 A12/ P[14] P[56]/SLD6 A11/ P[13] P[55]/SLD5 A10/ P[12] P[54]/SLD4 A09/ P[11] P[53]/SLD3 A08/ P[10] P[52]/SLD2 P[51]/SLD1 A07/ P[07] P[50]/SLD0 A06/ P[06] A05/ P[05] A04/ P[04] SYNC A03/ P[03] A02/ P[02] R/W A01/ P[01] WR A00/ P[00] RD
A 2
2
U1 M37451
+5Vref {2-A1,C3} 1 2 3 4 5 6
1
66 DAC2 67 DAC1
2
+5VREF WHEEL1 WHEEL2 PRESSR AGND NC
2
1 1
1 J308 WHEELS
R12 10K
VCC
R11 1M
+VBAT
2
A
Date: 9/29/00 By: DMH Sht 1 of 3 Rev: C V4 8
D
Connector Board (keyboard models)–Digital Interface (page 2 of 3) 5
6
J320 MIDI R66 2.2K 2
4
2
1
3
5
4
2 2
1 1
1
2
2
2
2 1 1 2
R5 56 5% 2
C56 0.1uF
1 THRU 3 OUT
U5 74HCU04
10
11
4
MIDI_RxD MIDI_TxD
3
S1 OUT/THRU SELECT
C19 1000pF
R108 10K
1
1
+12V
2
C21 1000pF
INTMIDITxD {1-A8}
R107 10K
INTMIDIRxD {1-A8}
C
2
B
Q18 MMBT2222
IACK {1-C1}
E
LCD Contrast Adjust
BREATH {1-B1} 1
IRQ {1-A8} 1
+5Vref {1-A1} MUXA0 {1-B8}
1.5K R82
R84 10K
1
R85 10K
2
-
2
270 R83
R86 10K
1
-
2 9
D12 S1A
-
2
B
C
2
R77 10K
2
E
Q3
1
1
100K R89
2
U4 LM339
2
TOUCH3 {1-C1}
1
2
4 3 1 6 J318 JACK
TOUCH1 {1-C1}
14 U4 LM339
FOOTSWITCH "2"
1 100K R90
4 3 1 6 J317 JACK
2
FOOTSWITCH "3"
100K R91
4 3 1 6 J319 JACK
1 20K R80
B
1
E
Q2 MMBT2222
1
FOOTSWITCH "1" R3 10K
TOUCH2 {1-C1}
1
+
8
2
C
1
R87 1K
2 U4 LM339
+
6
2
R81 150
1
1
1
2
D8 LL4148 1
1
D7 LL4148
+
4
7 LL4148 D11 2
2
2
2 1
D6 LL4148
5
1
LL4148 D10
2
1
LL4148 D9
2
1 2
R79 680K
2
R78 680K
2
R76 680K
1
1
1
1
2
RIBN_SLDR {1-B1}
2
C14 1000pF
1
2
C15 1000pF
FTSW2 {1-C1}
R9 10K R75 110
1
FTSW1 {1-C1}
R10 10K R74 110
2
FTSW3 {1-C1}
C16 1000pF
YOUNG CHANG CO., LTD.
1 100K R88
MMBT2907
2
R73 110 1
1
2
C
R13 10K
2
1
VCC
~12V
1
+5Vref {1-A1}
10K R109
VCC
1
VCC
9 10 11 13 14 15 12 1 5 2 4
U11 74HC4051 16 C VDD B A 3 Y0 Y Y1 Y2 8 Y3 VSS 7 Y4 VEE Y5 Y6 6 Y7 G
9
2
2
C
8 1
MUXA2 {1-B8}
1
~12V
MUXA1 {1-B8}
2
+5VREF CTRL1 CTRL2 CTRL3 CTRL4 VSLDR AGND
2
2
1 2 3 4 5 6 7
1
1
J305 SLIDER
U5 74HCU04
2
R65 110
2
R148 1K
2
2
1+
PC88 II CONNECTOR PCB Digital Interfaces
TOUCHSENS {1-A1}
Filename: 021221C4 Eng: Mfg: Doc: 021221-000
~12V
3
D
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
~12V
2
B
2
LL4148 D5
10uF 16V C7
1
J303 MIDI & CPU 1 MIDI_RxD 2 CONT 3 MIDI_TxD 4 IRQ 5 IACK 6 INT_RxD 7 INT_TxD 8 DIG_OUT 9 GND 10 +VBAT
+VBAT
1
2
C25 1000pF
1
3
1
2
1
R70 10K
A
2
2
2
121.0K 1% R67 TL072 U3 2 1 3 +
LL4148 D16
1
SPDIF OUT
2
13
U5 74HCU04
C20 1000pF
2
R64 165K 1%
2
2 3 1
U5 74HCU04
12
R101 220
2
4 J300
4
DIGITAL_OUT
2
VCC
3
R4 56 5%
R106 3K
C18 1000pF
1
2
C22 1000pF
2
2
2
5
6
U5 74HCU04
1
R98 110
2 3 PC910 U6
2
1
R63 1.5M
1 VCC
VCC
2
R100 220
C9 1000pF 1 2
2 4 5 3 1
D
1
R72 1M
2
1
1 2
2
EXPDL2 {1-B1} C13 LL4148 D4 0.1uF
C17 LL4148 1000pF D13
VCC
R97 110 1
1
2
C11 1000pF
2
1
2 1
R94 110
1
1
1
J316
2
C47 1000pF
2
LL4148 D3
U7 PC410 1 3
R102 56
C8 1000pF
3 4 5 2 1 6
1
SUPER RIBBON
1
1
2
1
1
1
TELMOD6PIN RBN/XYZ 1 REF2 REF+ 3 SEC2/Y 4 SEC3 5 SEC1/X 6 SENSE
2
1
R71 1M
2
C12 LL4148 D2 0.1uF
2
C10 1000pF
B
J315 JACK
1
R96 56
R99 56
R95 110
BREATH CONTROL
R93 56
5
EXPDL1 {1-B1} 1
1 2
J314 JACK
3
1
2
R69 110
EXPRESSION PEDAL "2"
2
1
1
1
1
J313 JACK
3 4 5 2 1 6
2
EXPRESSION PEDAL "1"
4
2
R68 110
5
1
1
A
LL4148 D1
3
2
E
2
1
22 4 1 6 2 7 3 5 23 11 8 13 9 14 10 12 24 18 15 20 16 21 17 19 25
1
B
IN
7 8
C Q1 MMBT2907
L5 AES XFRMR 5 2 1 6
R6 270 5%
Use either U6 or U7
OUT/THRU
1
OUT
8
2
+5Vref {1-A1}
7
1
4
2
3
1
2
5
1
Kurzweil PC2 Series Service Manual
4
5
6
7
Date: 9/29/00 By: DMH Sht 2 of 3 Rev: C V4 8
7-11
Kurzweil PC2 Series Service Manual
Connector Board (keyboard models)–Power Supply/Audio (page 3 of 3) 2
4
GND 2
C36 + 100uF 16V
2
2
3
IN OUT
C32 0.1uF
6
7 U5 74HCU04 5
C38 0.1uF
2
GND
1
2
100uF 16V C37 +
1
C44 0.1uF
~12V
C34 + 100uF 16V
C
C35 0.1uF
B
L4 FB2.5TSMT
+9V
VCC
1 R8 5.6K
R133 15.0K 1% 2
1
E
VCC
+12V
C 1
1
2 2
R134 47
2
NE5532 U9 1
B
2
E
E
+ B
R122 15.0K 1%
C
C42 0.1uF
~12V
MMBT2907 Q12
B C
2
2
R127 3K
RESET {1-A1}
MMBT2907 Q13
1
3
-
MMBT2907 Q8
R120 1K
R128 220
1
1
1
15.0K 1% R142
2
1 2
2
2
LL4148 D21
R132 15.0K 1% 2
2
C40 + 1000uF 16V
1
R119 1M
1
2
2
1
2
2
Q7 MMBT2222
1
E
8
R117 470
R126 220
4
R118 1.6K
C41 0.1uF
D22 S1A
1
1
1
1
C B
2
R19 5.6K
1
1
MMBT2907 Q4
2
E B
C GJ1 connects directly to C28.2 in a star ground pattern
+12V
2
2
R18 470
R121 10K
+9V
1
1 2
1
C55 100pF 1 2
B
R129 3K
2
2
2
1
HEADPHONES C39 0.22uF C46 100pF 1 2
BUVdd
C B
J302
1 1 2 15.0K 1% R138
1
C48 0.1uF
1
2
R149 10K 2
C24 0.1uF
5
NE5532 U9 7
E
Q15 KSC2331
R137 47 1
2
+
1
R130 200 1% 1/3W 2
R123 15.0K 1%
1
1
1
8
TL072 10 2
LEFT/MONO 3 4 5 2 1 6
R124 200 1% 1/3W 2
+
100K R7
2
VCC
1
-
6
2
R92 DNS
R141 200 1% 1/3W 2 R139 200 1% 1/3W 1 2
J311 JACK
RIGHT 3 4 5 2 1 6
1
5
J312 JACK
~12V
C23 0.1uF
2
1
YOUNG CHANG CO., LTD.
C54 0.1uF
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
1
C53 0.1uF
2
1
C52 0.1uF
2
1
C51 0.1uF
2
1 2
1 2
C50 0.1uF
R151 DNS
PC88 II CONNECTOR PCB POWER SUPPLY/AUDIO
2
ONE EACH AT GROUND PINS OF U1, U2, U5, U7, U11
1
Filename: 021221C4 Eng: Mfg: Doc: 021221-000
~12V
2
C
4
1
R146 10K
U3 7
J310 JACK
1
-
R145 200K
11
12
LM339 U4
2
2
2
3
+
13
1
-
Q14 KSC2331
C43 DNS 1 2
+12V
1
1
VCC
MONOSENS {1-C1}
6
E
2
PC88II AUDIO OUT
R150 100K
R135 15.0K 1% 2
R136 15.0K 1% 2
3 4 5 2 1 6
C B
1
1 2 3 4 5
LOUT+ LOUT~ AGND ROUT+ ROUT~
C
7-12
Q9 MMBT2222
E
JUMPER
D
PC88 II POWER
100K R15 2
2
1 2
GND
A
1
1
OUT
2
GJ1
B
~12V
PWRUPRST BUVdd MUTE +12V AGND -12V 5V_DIG DGND
5
IN OUT
C29 0.1uF
2 I1 3 I2 6 I3 7 I4
VCC
1
1 2
1 2
C26 1000PF
2
C28 + 100UF 16V
L3 FB2.5TSMT 1
1
1
2
VR3 79L12ACM
C33 0.1uF
3 1
1
2
+9V
S2 1
2
VR1 78T05
1
2
5
1 3 4 6
+
2
2
C31 470uF, 25V
J301 8 7 6 5 4 3 2 1
3 ~17V
1
4 5 1
S1A D15
J321
3
2
2
1
C27 1000PF
PWRUPRST {1-A8} VCC
6
+12V
PC88II PWR A
8
3 1
1
+
2
S1A D17
2
C30 1000uF, 25V
1
Switch is in ON Position
5
+12V
VR2 78M12 1
2
D14 S1A +17V 1 1
2
3
1
1
3
4
5
6
7
Date: 9/29/00 By: DMH Sht 3 of 3 Rev: C V4 8
D
Slider Board (keyboard models)–Sliders
2
ZONE 2 2
ZONE 3
S2 TACT
3
1N4148 D8
8
2
ZONE 4
S3 TACT
3
S1 TACT
3
1N4148 D7
3
A
2
S4 TACT
3
3
1N4148 D6
7
3
ZONE 1
3
A
D5 1N4148 2 1
1
J102 FP BRIDGE 1 LEDROW1 2 LEDROW2 3 SWROW 4 COL0 5 COL1 6 COL2 7 COL3 8 NC
6
2
5
1
4
2
3
1
2
2
1
Kurzweil PC2 Series Service Manual
GREEN 2
2
2
2
ZONE 2
ZONE 3
D4 DUAL COLOR ZONE 4
+5Vref
ZONE 1
D3 DUAL COLOR
1
1
RED
D2 DUAL COLOR
1
B D1 DUAL COLOR
1
B
J101 SLIDER 1 2 3 4 5 6 7
UP SLIDER C
R3 10K LIN
2 UP
SLIDER B
1
1
1
2
R4 10K LIN
2
R5 10K LIN 3
UP SLIDER D
R2 10K LIN
3
2
3
UP
R1 10K LIN
3
2
1
1
C
3
+5VREF CTRL1 CTRL2 CTRL3 CTRL4 VSLDR AGND
C
SLIDER A
VOLUME
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC88 II SLIDER PCB Sliders See Table Buttons
D
Filename: 121198B1 Eng: Mfg: :Doc: 1
2
3
4
5
6
7
D
Date: 10/26/99 By: DMH Sht : 1 of 1 Rev: A V1 8 7-13
Right Front Panel Board (rack models)–FP Buttons and LEDs (page 1 of 2)
1 2 3
15 14 13
SW ROTARY
12
0 1 2 3 4 5 6 7 8 9
A B C D
VCC
1 2 3 4 5 6 7 9 10 11
B COL1
PHASEA COMMON PHASEB
COL1 COL2 COL3 E
C
Q3 MMBT2907
COL6 COL7
6
E
C
E
Q4 MMBT2907
C
Q5 MMBT2907
E
7
C
E
Q6 MMBT2907
8
B COL9
5
U1 74HC145
SP1
A
4
B COL7
3
B COL6
2
B COL3
1
B COL2
Kurzweil PC2 Series Service Manual
C
Q7 MMBT2907
E
C
Q8 MMBT2907
A J602 Front Panel Bridge
COL9 16 15
VCC
+ C1
2
1
ROWDRVPWR
3
470uF 6V
1 1
1
+ C8 0.1uF 50V 20%
2
1
1
1
1
1
R1 10K
R3
10K
R4
10K
R5
10K
R6
10K
R7
10K
R8
10K
2
COL1
2
COL2
2
COL3
2
COL6
2
COL7
2
COL9
14 13 8 7 CNTRLR4 CNTRLR3 CNTRLR2 CNTRLR1
6 5 4 3 2 1
R2 1
0.1uF 50V 20%
SROW0 SROW1 DROW0 DROW1 CTRL4 CTRL3 CTRL2 CTRL1 COL9 COL7 COL6 COL3 COL2 COL1
2
2
3
1
1
2
+ C9
12 11 10 9
RDRPWR DGND
3
+ C2 470uF 6V
2
2
+ C10
B
+ C3 0.1uF 50V 20%
0.1uF 50V 20%
1
+5V PHASEB PHASEA C
SENSE DRIVE COLA COLD COLC COLB ROW7 ROW6 ROW5 ROW2 ROW1 ROW0
22 21 20 19
CNTRLR1 CNTRLR2 CNTRLR3 CNTRLR4
ROW0 ROW1 ROW2 ROW5
17 15 14 12 11
Q[1] Q[2] Q[3] Q[4] Q[5] Q[6] Q[7] Q[8]
1
1 2
3
1
RED D8
D9 DUAL COLOR
2
RED D6
MIDI RCV
1
1
1
1
KB3
RED D4 2
RED D2
R10 15
FX
2 FRONT PANEL RIGHT
2 5 6 9 12 15 16 19
U3 74HC541 ROW0 ROW1 ROW2 ROW5 ROW6 ROW7
ROW7 ROW6 ROW5 ROW2 ROW1 ROW0
18 17 16 15 14 13 12 11
B[1] B[2] B[3] B[4] B[5] B[6] B[7] B[8]
A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8]
ZONE 3 2 3 4 5 6 7 8 9
EDIT
1
1
C5 0.1uF 50V 20%
2
2
2
1
VCC
D
ZONE 2
1 2 S3
INT VOX 3 1 2 4 S4
MENU 3 1 2 4 S9
COPY 1 2 S8
GLOBAL 3 1 2 4 S10
3 4
MIDI SET 3 1 4 2 S5
C6 0.1uF 50V 20%
2
R12 10K 1
COMPARE 3 1 2 4 S7
MIDI RCV 3 1 4 2 S11
KB3 3 1 4 2 S6
2
R13 10K 1
2 Note: From RevB to RevC, no schematic changes made. R14 10K
1 CANCEL 3 1 4 2 S13
FX 3 4
VCC
R11 10K
SHIFT
SOLO
>>> 3 1 2 4 S2
3 4
C4 0.1uF 50V 20%
ZONE 1
<<< 1 2 S1
3 4
1
19
23 18 16 13
ZONE 4
1
G2 G1 DGND4 DGND3 DGND2 DGND1
INT VOX
C
10 9 8 7 6 5 4 3 2 1
1 OE 11 G 3 D[1] 4 D[2] 7 D[3] 8 D[4] 13 D[5] 14 D[6] 17 D[7] 18 D[8]
Q2 MMBT2222A C E
COMPARE
2
U2 74HC373
1
B
2 26 25 24
B
CTRL1 CTRL2 CTRL3 CTRL4
RED D7
2
J601 FRONT PANEL CONTHI WPR CONTLO
GLOBAL
RED D5 2
R9 15
RED D3 2
RED D1 2
Q1 MMBT2222A C E
MIDI SETUPS
1
COPY
1
EDIT
2
2
1
1
B
1
ROWDRVPWR
R15 10K 1 ENTER 3 1 4 2 S14
1 2 S12
2
2
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
R16 10K 1
RIGHT PC2 RACK FRONT PANEL FP Buttons and LEDs
2 FRONT PANEL RIGHT
1
7-14
2
3
4
5
6
7
Filename: 021251C1 Eng: DAON Mfg: Doc: 021251-000
Date: 12/20/2000 By: DO Sht 1 of 2 Rev: C v1 8
D
Left Front Panel Board (rack models)–Controllers, FP Buttons and LEDs (page 2 of 2) 1
3
4
5
6
7
8
A
ROWDRIVERPOWER
+ C7
2
1
A
2
Kurzweil PC2 Series Service Manual
R17 15
3
3
3
3
2
2
2
2
2
2
COL9 COL7 COL6 COL3 COL2 COL1
ZONE 3
ZONE 4
ZONE 1
1
D19 DUAL COLOR 1
1
1 2
SOLO
D17 DUAL COLOR
ZONE 2
SHIFT B
2
S17 2 4 1 3
4 3
D12 ZONE 4 LL4148
ZONE 3
S18 2 4 1 3
D14 ZONE 1 LL4148
S19 2 4 1 3 1
S16
D16 ZONE 2 LL4148
6 5 4 3 2 1
D18 LL4148
SHIFT
2
2 1
1
S15 2 4 1 3
12 11 10 9
2
8 7
1
CTRL4 CTRL3 CTRL2 CTRL1
1
D15 DUAL COLOR
2
DROW0 DROW1
14 13
R18 15
D13 DUAL COLOR
1
SROW0 SROW1
Q10 MMBT2222A C E
RED D10
2
B
16 15
B
RDRPWR DGND
D11 DUAL COLOR
1
J603 Front Panel Bridge
1
B
1
3
Q9 MMBT2222A C E
0.1uF 50V 20%
S20 2 4 3 1 SOLO
C
C
Front Panel Bridge 2 2 +5vref 1 AVSS
POT D
10K LIN R21
2
POT C
3
3
CW
CW 10K LIN R22
2 1
1
10K LIN R20
2 1
10K LIN R19
2
CW
1
CW
3
3
J604
POT B
POT A
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
D
D
LEFT PC2 RACK FRONT PANEL Controllers, FP Buttons and LEDs Filename: 021251C1 Eng: DAON Mfg: Doc: 021261-001 1
2
3
4
5
6
7
Date: 12/20/2000 By: DAON Sht 2 of 2 Rev: C v1 8
7-15
Kurzweil PC2 Series Service Manual
Connector Board (rack models)–Scanner (page 1 of 3)
1
2
3
4
5
6
7
8
R11 1M
+VBAT 1
2 PWRUPRST {3-A8}
RESET {3-C1}
INTMIDIRxD {2-C7} INTMIDITxD {2-C7} IRQ {2-C7} A
RP11
U1 M37451 24 UNUSED
58 59 60 61 62 63 64 65
10K
RIBN_SLDR
R2 10K 1
8 7 6 5
PORT57 PORT56 PORT55 PORT54
R22 1.5K
2 VCC
RP10
10K 8 7 6 5
PORT53 PORT52 PORT51 PORT50
R16 1M 1
10K 1
26
2 12.2880MHz 2
VCC
C4 33pF NPO
C5 33pF NPO
C49 0.1uF VCC
2 1
VCC
2 1
Y1
+5Vref {3-A3}
AIN[7] AIN[6] AIN[5] AIN[4] AIN[3] AIN[2] AIN[1] AIN[0]
A15/ P[17] A14/ P[16] A13/ P[15] A12/ P[14] A11/ P[13] A10/ P[12] A09/ P[11] A08/ P[10]
P[57]/SLD7 P[56]/SLD6 P[55]/SLD5 P[54]/SLD4 P[53]/SLD3 P[52]/SLD2 P[51]/SLD1 A07/ P[07] P[50]/SLD0 A06/ P[06] A05/ P[05] A04/ P[04] SYNC A03/ P[03] A02/ P[02] R/W A01/ P[01] WR A00/ P[00] RD
31 CLKOUT 29 XOUT 28 XIN
2
RP12
23 22 20 21
1
1 2 3 4
VCC
TP1
FB2.5TSMT L1 2 1
1 2 3 4
2
1
1
1
VCC
R1 10K
2
VCC
4 5 6 7 8 9 10 11
PORT57 PORT56 PORT55 PORT54 PORT53 PORT52 PORT51 PORT50
P[37] P[36] TxD/P[35] RxD/P[34] PWM/ P[33] EV3/ P[32] EV2/ P[31] EV1/ P[30]
RESETOUT
RESET
D7/ D6/ D5/ D4/ D3/ D2/ D1/ D0/
P[27] P[26] P[25] P[24] P[23] P[22] P[21] P[20]
69 VREFADC 68 VREFDAC 71 AVCC 70 AVSS WE/ WR/ P[67] RD/E/ P[66] 72 VCC CS/ P[65] 73 VSS2 A0/ P[64] 32 VSS1 RDY/ P[63] INT3/ P[62] 25 MODE INT2/ P[61] INT1/ P[60]
R32 DNS
74 75 76 77 78 79 2 3
1
2
R33 DNS
R34 DNS
2
66 DAC2 67 DAC1
1
8 7 6 5
2
1 2 3 4
1
C45 0.1uF
A
1
2
2 1
VCC
B
R12 10K
VCC
R14 10K 1
R144 10K
2 1
1
42 43 44 45 46 47 48 49
12 13 14 15 16 17 18 19
2 COMPONENTS TO KEEP NEAR CONNECTORS CONNECTOR COMPONENTS J304 L2, R117, R20, RP6-8
50 51 52 53 54 55 56 57 33 34 35 36 37 38 39 40
R147 10K
2
9 10 11 13 14 15 12 1 5 2 4
VOLUME {3-A3} PORT27 PORT26 PORT25 PORT24 PORT23 PORT22
U11 74HC4051 16 C VDD B A 3 Y0 Y
VCC
RIBN_SLDR
Y1 Y2 8 Y3 VSS 7 Y4 VEE Y5 Y6 6 Y7 G
B
R3 10K 1
2
UNUSED
RP9 10K
VCC 1 2 3 4
PORT64 PORT63 PORT62 PORT61
8 7 6 5
PORT64 PORT63 PORT62 PORT61
CPU
R108 10K
C 1
+12V
C
2
SENSE DRIVE COLA COLD COLC COLB
D
ROW7 ROW6 ROW5 ROW2 ROW1 ROW0 DGND4 DGND3 DGND2 DGND1
23 18 16 13
E BASS7 BASS6 BASS5 BASS2 BASS1 BASS0
1
1
~12V
2
CONTRAST {2-C6}
1K R148
C3 0.1uF
R24 10K
R20 110 1
PORT26 PORT27
2
10 9 8 7 6 5 4 3 2 1
C2 0.1uF
1
BASS7 BASS6 BASS5
1 2 3 4
8 7 6 5
4 3 2 1
5 6 7 8
4 3 2 1
5 6 7 8
100
2
YOUNG CHANG CO., LTD.
RP7
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
PORT64 {2-C7}
PC2 Rack Connector PCB Scanner
PORT52 PORT51 PORT50 100
TP3
PORT22 PORT25 PORT24 PORT23 PORT57 PORT56 PORT55
100 BASS2 BASS1 BASS0
RP6
TP2
1
L2 FB2.5TSMT R17 110 1 2
C1 0.1uF
2
2
2
15 14
1
7-16
1 1
2
17
12 11
2 10K R109
1
+5V PHASEB PHASEA
1
22 21 20 19
1
CTRL1 CTRL2 CTRL3 CTRL4
Q18 MMBT2222
B
26 25 24
2
CONTHI WPR CONTLO
C
J304 FRONT PANEL
Filename: 021250B3 Eng: Mfg: Doc: 021250-000
RP8
3
4
5
6
7
Date: 9/29/2000 By: D. O'Neill Sht 1 of 3 Rev: B V3 8
D
Connector Board (rack models)–Digital Interface (page 2 of 3)
1
2
3
Kurzweil PC2 Series Service Manual
4
5
6
7
8
J320 MIDI
5
3
2
1
4
5
3
2
1
4
VCC 5
2
B R94 110 2
1
2
1
1
2
12
1
2
2 1 1
R5 56 5%
2
C56 0.1uF
B
13
2
1 DIGITAL_OUT
2
1 2
1
1
C25 1000pF
U5 74HCU04
C18 1000pF
VCC
1
2 U5 74HCU04
1
R98 110
4
2
J300
SPDIF OUT
7 8
C22 1000pF
R100 220
R95 110
6
PC910 U6
VCC
R97 110
2 3
2
2
1
1
R106 3K
VCC
5
R99 56
C17 LL4148 1000pF D13 R102 56 1 2
3
R4 56 5%
3 4
2
1
C47 1000pF
2
1
2
1
2
1
U7 PC410 1 3
1
2
2
2
1
1
R96 56
1
R93 56
L5 AES XFRMR 5 2 1 6
R6 270 5%
Use either U6 or U7
1
4
18 25
1
A
OUT
21 16 20
2
4 23 12
3
7 2 6
22 5
5
OUT/THRU
11 24 19
IN
14 9 13
A
S1 2
C20 1000pF
U5 74HCU04
2
3 THRU 1 OUT
10
U5 74HCU04 11
4
MIDI_RxD 3
MIDI_TxD
OUT/THRU SELECT +VBAT U5 74HCU04
2
C19 1000pF
J303 MIDI & CPU 1 MIDI_RxD 2 CONT 3 MIDI_TxD 4 IRQ 5 IACK 6 INT_RxD 7 INT_TxD 8 DIG_OUT 9 GND 10 +VBAT
9
8 R101 220
1
1
2
C
2
C21 1000pF
INTMIDITxD {1-A8} C
INTMIDIRxD {1-A8} PORT64 {1-D6} CONTRAST {1-C8}
IRQ {1-A8}
D
YOUNG CHANG CO., LTD.
D
Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC2 Rack Connector PCB Digital Interfaces Filename: 021250B3 Eng: Mfg: Doc: 021250-000 1
2
3
4
5
6
7
Date: 9/29/2000 By: D. O'Neill Sht 2 of 3 Rev: B V3 8
7-17
Connector Board (rack models)–Power Supply/Audio (page 3 of 3)
4
2
NO
+
3
NC
IN OUT GND
C32 0.1uF
U5 74HCU04
3
1
1
C30 1000uF, 25V
S1A D17
C36 + 100uF 16V
5
C38 0.1uF
HPLEFT HPRIGHT
PC88II PWR
VR3 79L12ACM 2 I1 3 I2 1 OUT 6 I3 7 I4 100uF 16V GND C37 +
C33 0.1uF
~12V
PWRUPRST BUVdd MUTE +12V AGND -12V 5V_DIG DGND
A
1
2
1
1
+
C44 0.1uF
PC88 II POWER
100K R15
~12V
2
2
+5Vref {1-C5} VOLUME {1-B7}
14VAC 14VACSW 9VDC 9VDCSW +5Vref WPR DGND LEFT RIGHT AGND
C31 470uF, 25V
1
1+
3 ~17V
J301 8 7 6 5 4 3 2 1
5
10
1 2 3 4 5 6 7 8 9 10
2
2
VCC
S1A D15
2
J322
1
1
NO
A
-
PWRUPRST {1-A8} VCC
6
+12V
3 4
8
+12V
VR2 78M12 1
1
8
7
2
D14 S1A +17V 1
7 2
6
2
2
NC
2
9
5
1
3
2
2 RY1 DPDT
1
1
2
Kurzweil PC2 Series Service Manual
C B
Q9 MMBT2222
4 5 1
E J321
PC2R FRONT PANEL VOL/PWR/HPhones
VR1 78T05
E
C41 0.1uF
E
C
C42 0.1uF
~12V
B C
R127 3K
R129 3K
1
1
2
2
HPLEFT
B
R117 470
E
C46 100pF 1 2
2
C Q7 MMBT2222
D22 S1A
1
1
C40 + 1000uF 16V
2
1
1
1
R135 15.0K 1% 2
6
R136 15.0K 1% 2
-
2 15.0K 1% R138
C39 0.22uF
E R137 47 1
1
C53 0.1uF
2
1
C52 0.1uF
2
1
C51 0.1uF
2
1 2
2
1
VCC
E
LEFT/MONO
C
+
R123 15.0K 1%
1
1
1 2 3 4 5
RING = -
2 200 1% 1/3W R124
2 200 1% 1/3W R130
J302 LOUT+ LOUT~ AGND ROUT+ ROUT~
HPRIGHT
Q15 KSC2331
2
2
2
1
RESET {1-A1}
5
1
NE5532 U9 7
Q14 KSC2331
HPLEFT
HPRIGHT
C B
1
2
2
LL4148 D21
C B
2
R119 1M
C50 0.1uF
MMBT2907 Q13
MMBT2907 Q4
2
R118 1.6K
2
E MMBT2907 Q12
VCC
1
C R19 5.6K
2
2
8 R122 15.0K 1%
1
B
C
E B
2
1 R8 5.6K
2
+
2
2
R18 470
15.0K 1% R142
+9V
3
R134 47 1
2
1
JUMPER
1
NE5532 U9 1
1
2
-
1
BUVdd
2
B
R120 1K
R128 220
2
2
R126 220
1
1 2
R132 15.0K 1% 2
1
1
C35 0.1uF
1
1 2
2
C34 + 100uF 16V
C
1
1
+12V
1
VCC
MMBT2907 Q8
B
L4 FB2.5TSMT
+9V
2
VCC
2
GJ1
1
3
GND C29 0.1uF
R133 15.0K 1% 2
4
C26 1000PF
C28 + 100uF 16V
IN OUT
1
+12V
1
1 2
2
1
1
1
B
2
L3 FB2.5TSMT
1
1
2
2
2
+9V 1
C27 1000PF
R121 10K
2
3
C55 100pF 1 2
TIP = + LEFT/MONO
PC88II AUDIO OUT
C54 0.1uF
1 1
2
2
RING = -
200 1% 1/3W R139
200 1% 1/3W R141
6 JACK J311 1 2 5 4 3
6 JACK J312 1 2 5 4 3
TIP = + RIGHT
ONE EACH AT GROUND PINS OF U1, U2, U5, U7, U11 D
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited. PC2 Rack Connector PCB POWER SUPPLY/AUDIO Filename: 021250B3 Eng: Mfg: Doc: 021250-000
Note on signal polarity; Line out TIP, Headphone out and Digital out = positive going signal. The Digital out is inverted with respect to the output of the DAC 1
7-18
2
3
4
5
6
7
Date: 9/29/2000 By: D. O'Neill Sht 3 of 3 Rev: B V3 8
D
Power/Volume/Headphone Board (rack models)
1
2
3
4
Kurzweil PC2 Series Service Manual
5
6
7
8
A
A
VR1 Power sw / Volume control 7 6 5 4 3 B
J2 1 2 3 4 5 6 7 8 9 10
Do not connect these pins
2 1
14VAC 14VACSW 9VDC 9VDCSW +5Vref WPR DGND LEFT RIGHT AGND
B
6 5 4 2
PC2R FRONT PANEL VOL/PWR/HPhones
3 7 8 9 1 J1 Headphone
Front Panel Bridge 2 2 +5vref 1 AVSS
C
C
J3
YOUNG CHANG CO., LTD. Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.
D
D
PC2R Power / Volume / Headphone PCB Filename: 121262B1 Eng: Mfg: Doc: 021262 1
2
3
4
5
6
7
Date: 12/7/2000 By: Fran Turner Sht 1 of 1 Rev: BV1 8
7-19
Kurzweil PC2 Series Service Manual
7-20
Kurzweil PC2 Series Service Manual
A
C
Alpha Wheel Test scanner tests, PC2 5-8 scanner tests, PC2R 5-7 Assembly instructions, 76-note Keyboard Assembly connecting the keyboard 4-21 contact boards 4-24 replacing contact strips 4-25 replacing keys 4-24 replacing the keyboard 4-20 Assembly instructions, 88-note Keyboard Assembly contact boards 4-30, 4-31 removing a key weight 4-33 replacing contact strips 4-32 replacing keys 4-30 replacing the keyboard 4-27 Assembly instructions, keyboard models bottom enclosure 4-6 Connector Board 4-10 Enclosure Support Walls 4-8 Engine Board 4-17 Front Panel Board 4-12 LCD Board 4-13 Mod Wheel Assembly 4-18 Polyphony Expansion Board (PCX-1) 4-14 Slider Board 4-15 top enclosure 4-6 Assembly instructions, rack models Connector Board 3-4 Engine Board 3-6 Headphone/Volume/Power Switch Board 3-14 LCD Board 3-12 Left Front Panel Board 3-13 Polyphony Expansion Board (PCX-1) 3-5 removing the front panel faceplate 3-9 replacing the front panel faceplate 3-8 Right Front Panel Board 3-11 Top Cover 3-2
Cables, keyboard models Connector Board 4-8 Engine Board 4-16 Front Panel Board 4-11 Cables, rack models Connector Board 3-3 Engine Board 3-6 Connector Board cables, keyboard models 4-8 cables, rack models 3-3 diagram, hardware 4-9 parts list, keyboard models 6-6 parts list, rack models 6-13 removing, keyboard models 4-8 removing, rack models 3-3 replacing, keyboard models 4-10 replacing, rack models 3-4 Contact Boards removing, 76-note keyboard models 4-24 removing, 88-note keyboard models 4-30 replacing, 76-note keyboard models 4-24 replacing, 88-note keyboard models 4-30, 4-31 Contacts troubleshooting 5-12
B Battery removing, PC2 5-5 removing, PC2R 5-6 replacing, PC2 5-5 replacing, PC2R 5-6 Boot Block entering 5-2 installing 5-4 Boot block installing the Sound ROM Option 5-4 Bottom Enclosure closing, keyboard models 4-6 diagram 76-note keyboard 4-2, 4-19 diagram 88-note keyboard 4-3, 4-26 opening, 76-note keyboard 4-2 opening, 88-note keyboard 4-3 Burn-in Tests diagnostics 2-3 Button Test scanner tests, PC2 5-8 scanner tests, PC2R 5-7
D Diagnostic Test Modes: description 2-2 Diagnostic Tests LED 2-5 LISA 2-4 MABEL 2-4 MIDI 2-5 PCX-1 MABEL 2-6 PCX-1 RAM 2-5 PCX-1 ROM 2-5 PCX-1 RW 2-5 PCX-1 SROM 2-6 RAM 2-4 Read-write 2-4 ROM 2-4 Sound ROM 2-4 ZRAM 2-5 Diagnostics Burn-in Tests 2-3 entering tests 2-2 list of tests 2-1 test results 2-3 Diagram, keyboard models bottom enclosure 76-note keyboard 4-2, 4-19 bottom enclosure 88-note keyboard 4-3, 4-26 Connector Board hardware 4-9 Engine Board 4-16 Front Panel Board 4-11 front panel layout 1-3, 1-4, 1-5 Interconnect 5-14 key spring, 76-note keyboard 4-23 key spring, 88-note keyboard 4-29 key weights 88-note keyboard models 4-32 rear panel 1-2, 4-4 Slider Board 4-14
i
Kurzweil PC2 Series Service Manual
top cover and bottom enclosure 4-5 top enclosure, board locations 4-7 top enclosure, enclosure support wall locations 4-7 Diagram, rack models front panel 1-6, 1-7, 1-8 front panel assembly 3-8 front panel faceplate 3-10 Headphone/Vol/Pwr Sw Board connection 3-13 Interconnect 5-13 rear panel 1-6 removing the Polyphony Expansion Board (PCX-1) 3-5 removing the top cover 3-2 Disassembly instructions, 76-note Keyboard Assembly contact boards 4-24 disconnecting the keyboard 4-21 removing contact strips 4-25 removing keys 4-22 removing the keyboard 4-19 Disassembly instructions, 88-note Keyboard Assembly contact boards 4-30 removing a key weight 4-32 removing contact strips 4-31 removing keys 4-27 removing the keyboard 4-26 Disassembly instructions, keyboard models bottom enclosure 76-note keyboard 4-2 bottom enclosure 88-note keyboard 4-3 Connector Board 4-8 Enclosure Support Walls 4-8 Engine Board 4-15 Front Panel Board 4-10 LCD Board 4-13 Mod Wheel Assembly 4-17 Polyphony Expansion Board (PCX-1) 4-13 Slider Board 4-14 top enclosure 4-4 Disassembly instructions, rack models Connector Board 3-3 Engine Board 3-6 Headphone/Volume/Power Switch Board 3-14 LCD Board 3-11 Left Front Panel Board 3-12 Polyphony Expansion Board (PCX-1) 3-5 removing the front panel assembly 3-8 removing the front panel faceplate 3-9 Right Front Panel Board 3-10 Top Cover 3-2
E Enclosure Support Walls removing, keyboard models 4-8 replacing, keyboard models 4-8 Engine Board cables, keyboard models 4-16 cables, rack models 3-6 diagram, keyboard models 4-16 parts list 6-3 removing, keyboard models 4-15 removing, rack models 3-6 replacing, keyboard models 4-17 replacing, rack models 3-6 Entering Diagnostic Tests 2-2
ii
F Final Assembly parts list, 76-note keyboard models 6-9 parts list, 88-note keyboard models 6-11 parts list, rack models 6-16 Front Panel diagram, keyboard models 1-3, 1-4, 1-5 diagram, rack models 1-6, 1-7, 1-8 features, keyboard models 1-3 features, rack models 1-7 Front Panel Assembly, rack models description, front panel boards 3-9 diagram 3-8 diagram, front panel faceplate 3-10 diagram, Headphone/Vol/Pwr Sw Board connection 3-13 parts list 6-14 removing the front panel assembly 3-8 removing the front panel faceplate 3-9 replacing the front panel assembly 3-8 replacing the front panel faceplate 3-9 Front Panel Board cables, keyboard models 4-11 diagram, keyboard models 4-11 parts list 6-5 removing, keyboard models 4-10 replacing, keyboard models 4-12 Front Panel Knobs Test scanner tests, PC2R 5-7
H Headphone & Power Switch Assembly parts list 6-15 Headphone/Volume/Power Switch Board removing, rack models 3-14 replacing, rack models 3-14
K Keyboard Dead 5-12 Dead Note(s) 5-12 noise 5-12 scanner testsPC2 5-9 Keyboard Assembly parts list, 76-note keyboard models 6-10 parts list, 88-note keyboard models 6-12 Keyboard Assembly, 76-note keyboard models connecting the keyboard 4-21 contact boards 4-24 disconnecting the keyboard 4-21 key spring, diagram 4-23 natural/white keys description 4-23 removing contact strips 4-25 removing keys 4-22 removing the keyboard 4-19 replacing contact strips 4-25 replacing keys 4-24 replacing the keyboard 4-20 sharp/black keys description 4-23 Keyboard Assembly, 88-note keyboard models contact boards 4-30, 4-31
Kurzweil PC2 Series Service Manual
diagram, key weights 4-32 key spring, diagram 4-29 natural/white keys description 4-28 removing a key weight 4-32 removing contact strips 4-31 removing keys 4-27 removing the keyboard 4-26 replacing a key weight 4-33 replacing contact strips 4-32 replacing keys 4-30 replacing the keyboard 4-27 sharp/black keys description 4-29
diagram, keyboard models 1-2, 4-4 diagram, rack models 1-6 features, keyboard models 1-2 features, rack models 1-6 Resets Hard Reset 5-2 Soft Reset 5-2 Right Front Panel Board parts list 6-15 removing, rack models 3-10 replacing, rack models 3-11 ROM: diagnostic test 2-4
L
S
LCD Board parts list, keyboard models 6-8 parts list, rack models 6-15 removing, keyboard models 4-13 removing, rack models 3-11 replacing, keyboard models 4-13 replacing, rack models 3-12 LED: diagnostic test 2-5 Left Front Panel Board parts list 6-14 removing, rack models 3-12 replacing, rack models 3-13 LISA: diagnostic test 2-4
Scanner Tests, PC2 Alpha Wheel 5-8 Buttons 5-8 Front Panel Sliders 5-8 Keyboard 5-9 Mod Wheels 5-9 Pedals, continuous 5-9 Pedals, switch 5-9 Scanner Tests, PC2R Alpha Wheel 5-7 Buttons 5-7 Front Panel Knobs 5-7 Slider Board diagram, keyboard models 4-14 parts list 6-9 removing, keyboard models 4-14 replacing, keyboard models 4-15 Slider Test scanner tests, PC2 5-8 Software Updates file formats 5-3 installing 5-3 Sound ROM: diagnostic test 2-4
M MABEL: diagnostic test 2-4 MIDI: diagnostic test 2-5 Mod Wheel scanner tests, PC2 5-9 Mod Wheel Assembly parts list 6-8 removing, keyboard models 4-17 replacing, keyboard models 4-18
P PCX-1 MABEL: diagnostic test 2-6 PCX-1 RAM: diagnostic test 2-5 PCX-1 ROM: diagnostic test 2-5 PCX-1 RW: diagnostic test 2-5 PCX-1 SROM: diagnostic test 2-6 Pedals continuous, scanner tests, PC2 5-9 switch, scanner tests, PC2 5-9 Polyphony Expansion Board (PCX-1) diagram 3-5 removing, keyboard models 4-13 removing, rack models 3-5 replacing, keyboard models 4-14 replacing, rack models 3-5
R RAM: diagnostic test 2-4 Read-write: diagnostic test 2-4 Rear Panel
T Top Cover removing, rack models 3-2 replacing, rack models 3-2 Top Enclosure, keyboard models description 4-7 diagram, board locations 4-7 diagram, enclosure support wall locations 4-7 removing 4-4 replacing 4-6 Troubleshooting Audio Problems 5-10 Front Panel Problems 5-11 Keyboard Problems 5-12 Power Problems 5-10
U User data saving 5-1
iii
Kurzweil PC2 Series Service Manual
Y Young Chang Distributors iii
Z ZRAM: diagnostic test 2-5
iv
